(Yes, this includes tickles cuz we need more of them in this au)

You always had a journal. No. Not a diary. A journal. Today you and your brothers had the day off, so you were writing what happened yesterday in your journal. You were also wearing headphones and listening to (fav/music) as you wrote. You didn't hear Papyrus knocking on the door until it was to late. "Hey sis can I borrow-?" "AAAAH!" You closed your book and tore off your headphones.

"Papyrus! Knock!"

"I did! You were... wait what were you writing in?"

"Umm... NOTHIN!"

Papyrus smirked as you nervously glanced away. "Judging by your look... I'd say you're," Papyrus teleported onto your bed and started to tickle your sides, causing you to squeal, "LYING!" Your cheekbones were already red-orange as you laughed and tried to escape Papyrus's tickling hands. "AHAHAHAHAHIHIHIHI! OOHOHOHOHOHO MYHIHIHIHIHI GAHHAHAHAOD! STAHAHAHAHAHAHA! PAAAPYRUUUS!" Papyrus snickered as he tickled you, he may have found a new sweet spot. "SAAHAHAHANS! AHAHAHA! HEHEHEHELP!" You begged, Papyrus only snickered more before Sans ran in. "WHAT'S GOING... on..?" Sans's voiced lowerd as he saw Papyrus tickling you and you laughing like no tomorrow.

Sans pounded on the wall before Papyrus stopped tickling you and you panted. "What's going on here?" Sans asked with his arms crossed, Papyrus smirked as he hatched a plan, before Papyrus explained everything. "(Y/n), you have a diary?" Sans asked after the explanation. You sat up and narrowed your eye sockets. "Its a JOURNAL! Not a diary!" You growled, Sans walked over and sat on your bed before smiling at Papyrus. "Anything you write in about your day is a diary." Sans teased playfully as he gently tapped his gloved fingers against your ribcage. DAMN IT! He remembered your weak spot from last time!

You giggled at the touch before Papyrus started to scribble his fingers over your sides. You squealed and giggled before you fell over to your one side. "Oh? One side tickle huh? Ok." You were laughing as Papyrus tickled your one side. Sans rose a curious eyebrow of where your belly would be until he scribbled his fingers there. You squealed and laughed. "NAHAHAHAHAT THEHAHAHAHAHARE! AHAHAHANY WHEHEHERE BUT THEHAHAHAHARE!" You begged, Sans smirked before scribbling his fingers on the area of your ghost belly in a fast pace as Papyrus kept tickling your one side without any sign of mercy.

You had tears streaming down your eye sockets as your brothers gave you the tickle torture of your life. "If you say you own a diary, then I'll stop!" Papyrus offered. What to chose? Say you have a diary and probably get teased about it or just stick with the tickles?

"OKHAHAHAHAY! I (Y/N) OWN A DIARY! AHAHAHAHAHIHIHIHI!"

The two stopped, like promised, and hugged you. "You could have told us." Papyrus said, you smiled before you realized... he said 'I'll stop'. Sans grabbed you and pinned you into a hug.

"I want to test out this new sweet spot I found!" Sans then dug his fingers and scribbled them all over your ghost belly. "AHAHAHAHAHAHAHAHAHA! SHAHAHAHAHAHAHAHAHA! IHIHIHIHIHIHAHAHAHAHAHAHAHHAHA! STHAHAHAHAHAHAHAHAHAHAHAHAHA!" You could even finish your god damn sentences. On top of that, Sans was nuzzling your neck. Papyrus was snickering as Sans tickled you till you were about to pass out. "G..God damn you b..both..." You growled, Sans smirked at you as Papyrus patted your ghost hair covered skull.

"We love you too sis."