UnderFell Sans X Reader

Prank

Recall~

You had been sleeping at the bros home for 3 days and the first one had passed by you getting stabbed or something and had to lay dowm all day whuch was cool till Sans teases you.. It time to get him back

Back to reality~

You slowly woken up from sleeping on the couch as you sat up and looked around to make sure no one was stalking you.. And for once there wasnt as it seems the place got to quiet. You looked at your left arm only to see a sleepy Flowey as you smile softly and it seems like your wound had finish recovering as you got off the couch and head to the kitchen hoping to find water as you got there you saw Sans passes out on the floor with a bottle of mustard in his hand. "What the?.." You went and got a cup and pour some water into it and from there you drank it as you sigh in relief as there were no noise for now heh.. You had to prank him now so you got another cup of water and poured it all over his shirt and jacket and from there you ran out the kitchen and back laying on the couch only to hear some yelling in the kitchen "WHO THE FUCK WET ME!" This was the first part of your revenge plan as you grin you then notice a wet cherry opening the door hard and loudly only looking around to see you as he was a bit mad "IT WAS YOU HUH! I GET YOU NO-" He was stopped by a loud voice and this was Papyrus voice "SHUT THE FUCK UP SANS IM TRYING TO SLEEP YOU DEAD PILE OF BONES!" Sheesh.. This went really not in plan or you didn't even started one but that all so now that everyone is awake in the skelebros which Papyrus had left to talk to Undyne about Royal guard stuff and Sans who is passed out with musterd bottle in his hand this kinda gave you another plan which hope will ne funny and also is worth it. You went to the kitchen to see if there was Ketchup and thanks uh.. Asgore for what others says there was then the next plan.. You walk back to the living room to see a sleepy Sans and his bottle as this was the best time to prank.. You went over to take the bottle slowly and open the cap slowly to not wake him up which worked and this be the best part you pour ketchup into the mustard bottle and closed it and put it back into Sans hand then went to sit on the floor as you chuckle a bit and were about to wake him up till... Papyrus came "SANS YOU LAZY BONE I WILL KILL YOU IF YOU CONTINUE TO SLACK OFF!" Sans quickly woke up as he sigh softly and drank his mustard. As this time you knew you fucked as Sans spit out the ketchup and looked around till he saw You laughting and from there he used his power which picked you up and sling you to the roof and then back to floor then sat you close to Sans where he end up biting your neck and causing your neck to bleed... The prank was worth the pain a little.

//Sorry for the slow updAte guys but i had to Rp with some Red Sans out there lol to get use to how he act anyways enjoy while i update the next part and sorry if this chapter was crap.. Im not good at writing 😭😭😭