OK, so before anything happens. I have 2 things to say. 1.- Shout-out to @Phosec for the name of the lizard. (it will be mentioned in the chapter) and 2.- I know Halloween is on Monday, But Monday means school so I'm just gonna type it up today. Anyway that's enough talking. On with the story!

~~~ Last Time~~~

"Every decade, .0001% of the population suffers from over erh-mah-gash-ification. If you or someone you love is getting way over hyped. Please check yourself, before you wreck yourself."  -SilverQuill

~~~This Time~~~

~~(Y/N) POV~~

I woke up earlier that everyone to set up pranks n' stuff. Today is Halloween and I shall prank everyone in every way possible. Or I could dress up like a killer and chase everyone... Na, that's lame. I start by setting up a prank in the bathroom. Y'know, red dye in the toilet and maybe some ketchup foot prints. I put some fake spiders in lampshades. Water buckets on door frames. You know silly harmless pranks and being an agent of Karma.

Then I start to get serious I take a fake knife that I had and cut out a round area so that it go around my arm without hurting me. (You put a hole in the blade and put your arm through the hole) If no one knew, it would look like I hacked a knife threw me arm. (IDK how to describe it. Sorry.) Then I add a few drops of fake blood to that and done. This is gonna freak everyone out. XD. Then I put my head in a jar. JK, it's a printed image that's suppose to look like my head when rolled up. And I stick it in the fridge.

I head back into my room and wait for everyone to wake up. About an hour later, I hear a scream and the sound of a bucket hitting the ground. I get out of me room and rush to Toriel's room. And yup, she got dunked by the water bucket. I look at her and try to stifle a laugh. Sans and everyone else soon arrive and I think Sans and I were both trying to hold back giggles.

"Very funny you two. Now who put a water bucket on my door frame." She said firmly and giving us that death glare. Sans stops immediately but I still laugh. I'm not scared of some goat mom. I've had to deal with a scientist who would stick needles and pins into me on a daily basis. And shoot lasers into my eyes once or twice a month. I've fled for my life twice a week, and three times on a leap year! (^_^) Of coarse everyone... DOESN'T find this the least bit suspicious.

"I'm going to go clean myself up, so NO ONE cause any trouble while I'm gone. Ok?" Toriel orders us. I pay no heed to this warning; as a result I keep on laughing.

"Okay, what ever." I say and go to turn on one of the lamps.

After I turn on the lamp the room erupts in screams. I know why, but I chews t play the oblivious card. I turn around to face everyone with the "I don't get it" look on my face.

"What are you all screaming about?" I ask the group, "There's literally nothing to scream about."

No one says anything, so Alphys just points to the lamp behind me. I turn around to face the lamp, already knowing what she is pointing to. Picking another card from the deck... I chose the amazed card. This works because I like to mess with bugs. (I think my Dad just turned into a chicken.)

"Ohhh!!! That's so cooool!" I say looking at the lamp shade. I put toy bugs on the inside of the shade, so when I turned it on, you would see a silhouette of a bug. I then play the stupid card and pick one up/ I stick my hand into the shade, grab at one of the toys, and act like it bit me.

"AAAHHHHHHH!" I yell in "pain" and fling the beetle at Undyne. She then starts to freak out and starts to play ping-pong with the beetle... the beetle being the ball. freak-out intensify and NO ONE COULD HANDLE IT!!

I'm chilln' in the back-ground and enjoying the show. Everyone yelling and such. Eventually the beetle was dropped on the floor and stomped on. I kinda' started to feel sorry for the beetle, even though it was fake.

After the beetle was completely destroyed and everyone settled down, it was time for breakfast. We all walked into the Dinning Hall still on edge because of the bugs. Once everyone was at their seats and eating, I thought it was a good time to ruin the meal.

"Hey guys, wanna see something cool?" I say to all of them as I get out the fake knife. I hold it so that the back was facing them so they couldn't see the hole in it.

"um... kid what are you gonna do?" Sans asked with caution.

I slammed the knife on my arm and started to scream. Everyone at the table started to freak out. Everyone in the Dinning Hall looked and saw the knife and started to scream to. I stopped screaming and started to laugh. Everyone looked at me like I was crazy. I remove the knife from my arm and show them the hole with the fake blood and continue to laugh. Everyone soon stopped panicking and realized it was a joke and face palmed. Sans took the joke in the wrong way.

"don't you every scare me like that ever again."

"I can't say any promises." I say in an almost singing like tone.

~~Sans POV~~

I can't believe (Y/N) would pull a joke like that! Pretending to chop your arm off isn't funny! I should know. But seeing Tori drenched in water and Undyne messing with a toy bug was pretty funny. Wait, who set those up? Everyone would think I did it, considering that I'm a comedian... I'm thinking (Y/N) did it. She's the only other one who enjoys jokes. And she was the one who turned on the light and messed with the bugs. She's the most likely candidate. I leave the Hall and look around for any other pranks she may have set up. Then I hear another scream coming form the bathroom. Snowdrake comes out looking like he saw a ghost.

"Whoa, what's wrong?" Undyne asked.

"Th... Th... There's blood." Snowdrake said

Undyne went into the bathroom and (Y/N) followed along with everyone else. And... yup, there was blood on the floor and in the toilet. I can't lie, it looked pretty real. I look over at (Y/N) and she is smiling and looking at the group of monsters. She walks over and says "It's just ketchup, don't worry." all nonchalantly 

"How do you know punk!" Undyne says wiping her head around to see (Y/N)

"'Cause I put it there. It's all ketchup on the floor. And red dye in the toilets." She said and was about to walk out before Undyne grabbed her shoulder.

"Why are you doing pranks all the sudden?"

"It's Halloween. And since I can't go trick-or-treating I might as well to pranks."

She leaves the bathroom and we all leave a little later and I head to (Y/N)'s to talk. I knock on her door and wait.

"It's open!" 

I head in and take a seat on the pile of blankets.

"OMG, dude! I just thought of a name for this lil' guy." She said excitedly.

"okay, what's it's name?"

"First of all, it's a he. Second of all, I'ma gonna call you Karma." She said to me and the lizard.

"karma? why?"

"It's gonna be a funny joke. Like-" She picks up Karma from the terrarium,"Karma attack Sans" Karma jumps out of (Y/N)'s hands and onto my shirt. And starts to claw and my tux.

"hey! stop! make him stop! this is the only tux i have!" (Y/N) nods and snaps her finger.

"Karma stop." The lizard crawls off my tux and back onto (Y/N) hands. Were she puts him back into the terrarium."And I know that's not the only tux you have. You have ,like, 3 more just like that one."

"How do you know."

"There are 3 tuxes in the closet before I got here so I'm guessing it's a rule that applies to everyone."

"then why aren't you wearing one?"

" 'cause I ain't fancy like that. And I'm OK with it."

"well, i got work to do. see ya later." I tell her and leave the room and prepare for the mission we need to do.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~(A/N)

There you go! I hope you enjoyed being an agent of karma for a day! And again shout out to@Phosec for the name of the lizard. Welp, see ya in the next one!