Sans' P.O.V.
     I set Frisk down gently on the couch. She's adorable when she's asleep.
     I walked into the kitchen to grab a bottle of ketchup. As I did, I noticed the calendar on the wall. It had a big red circle on it, surrounding a specific date. I took a closer look at it while drinking my ketchup.
     "May 1st—Frisk's BDay" it read.
     I literally spit out my ketchup out of my nose. I forgot it was Frisk's BIRTHDAY tomorrow! God dammit!
     I walked back into the living room to see if Frisk was still asleep. I had to get Papyrus to help me with birthday plans...
     Frisk was still asleep. Good. I teleported into Papyrus's room and saw him sitting at his desk, playing on his computer.
     "Hey bro." I greeted him with a big grin. "Hey, I need your help with something."
     Papyrus turned to greet me. "AH! BROTHER! OF COURSE I'LL HELP YOU! WHAT DO YOU NEED?"
     "I need to plan a birthday party," I said, scratching the back of my skull. "For Frisk. I need your help on it."
     Papyrus squealed. I forgot how much he enjoyed planning things, even if it was a silly sleepover. "OH, BROTHER! OF COURSE I WILL HELP YOU WITH THIS TASK! AFTER ALL, THE GREAT PAPYRUS IS BRILLIANT AT PLANNING A BIRTHDAY PARTY!"
     And with that, Papyrus and I set up a game plan:
     Papyrus would decide how to decorate while I invite people over the phone. I'll ask Alphys to hang out with Frisk so she'll be distracted when Papyrus is decorating the house. While Frisk is out with Alphys, I'll buy a present from both Papyrus and I and one from myself.
~let time skippe!~
     Everything seemed to go as planned! I was able to get Undyne, Toriel and Asgore (thank God they were able to squeeze in...since they're busy and all), and Alphys. Alphys agreed to hang out with Frisk.
     Papyrus decided to go out and buy the decorations and get the cake early. While he was out doing that, I decided to take a nap next to Frisk.

Frisk's P.O.V.
~TIME SKIP...AGAIN!~
     I woke up to see that my head was on Sans' lap. I blushed and smiled. I sat up groggily, and found the remote. I decided to watch TV.
     Sans was still asleep, so I had the volume on low. I looked around, only to find that it didn't smell like burnt spaghetti and...quiet. Other than the fact that Sans was snoring, it was still quieter than usual.
      Sans woke up. I smiled and kissed him lightly on the cheek...bone? He chuckled and embraced me into a cuddle. I accepted it.
     "Where's Papy?" I asked. Sans' face seemed to turn blank.
     "Oh...uh...he's out...buying stuff for...spaghetti!" Sans said. I smiled, I knew he was trying to keep his cool. I kissed him on the teeth...lips...God why is it a little awkward to kiss Sansy?
     I noticed Sans blushed a tad, but he accepted the kiss. His hand runs through my hair, his other hand on my cheek. I blushed.
     I moved away from the kiss to get air. I yawned...why am I so tired today?
     I laid back down on Sans' lap. My eyes felt heavy again. I drifted off to sleep once again.

Sans' P.O.V.
     I was a little glad that Frisk was back to sleep...I almost ruined the surprise for the birthday. Papyrus opened the door, very quietly. He noticed that Frisk was asleep, so he tip toed inside.
     "I GOT THE THINGS FOR DECORATION AND THE CAKE!" Papyrus whispered as quietly as his voice could take it.
     I nodded and gestured him to the kitchen to hide everything. The cake was put at the very back of the fridge, behind left over spaghetti, and the decorations was hid on top of the fridge. We would decorate everything tomorrow.
     Papyrus ran back upstairs to go to bed...no wonder. It was 1 in the morning anyways.
     I picked Frisk up with my magic and carried her upstairs. We got to my room.
     I opened the door and moved Frisk inside. I gently set her down on my duvet, covered her with my hoodie, and laid next to her. I eventually fell asleep.