[This takes place in the Underswap AU]

Papyrus and Blue walked down to the waterfall, with a picnic basket; Blue wanted to help cheer up Papyrus. He was obviously depressed about something, as he didn't make any puns like he usually did. They reached the waterfall, and Blue began setting up the picnic. Papyrus sat there and watched, messing with his hoodie.

Blue noticed Papyrus wasn't feeling any better, and decided to take matters into his own hands.

Papyrus almost didn't notice Blue walk up to him. "Hey Sans." Papyrus muttered, looking down. "Need help cheering up?" Blue giggled. Papyrus shrugged. "Ok! Don't say I didn't warn you!"

Blue sat down next to Papyrus, and poked one of his ribs. Papyrus let out a small squeak. "Hehey.." "Oh, did I find something?" The small blue skeleton poked his brother's rib again. The taller skeleton made a small squeak again.

Blue started tickling Papyrus's ribs, making him giggle. "Sahahans! Whahaht are yohohu doihing?" Papyrus asked in between giggles. "Cheering you up, of course~!" Blue said in glee.

Blue pulled Papyrus's hoodie up, making Papyrus nervous. "Oh no, please don't..." Blue ignored his plea and wiggled his fingers up and down Papyrus's spine. "SAHAHAHANS!! STAHAHAHP IT! PLEAHAHAHASE!!" Papyrus was in full laughter now, squealing as his younger brother continued tickling his spine. "SAHAHANS!! PLEAHAHAHSE!! SHOHOWOW MERCY!" "Not until you cheer up, Papy!" Blue was having a lot of fun with this.

Blue stopped tickling Papyrus, to let him breathe. Blue saved the best attack for last. He started removing Papyrus's boots, and he caught on. "SANS, PLEASE DON'T-" Sans begin spidering his soles, making Papyrus laugh hysterically. "SAHAHAHANS NOHOHOHOHO!" Papyrus's weak spot were his soles, and Blue knew this. Papyrus laughed like crazy, and tears formed in his eyes. "OHOHOHOK! I'M HAHAHAHAPPY NOHOHOHOW!" Blue stopped, and the taller skeleton panted heavily. They enjoyed their picnic, and Papyrus had cheered up. 

After enjoying some sandwiches and watermelon, they went home to watch some TV.

~THE END~