Definition: In this task, you are given a Reddit post as a text. Your task is to generate a title for this text. The title should start with "TIFU by", followed by a situation that caused humor. The title should contain 7-12 words, ideally.
Input: Text: i was recently in a college production. at the end of the show the cast stand on stage and bow, and then it goes blackout. i mean really blackout. can't see your own hand in front of your face darkness. 

my friend and i  (both dudes) occasionally slap each others butts to weird each other out, or sometimes, as a congratulatory slap. 
we lined up for the curtain call and i spied my friend (let's call him larry) next to friend b. larry was dressed as an oompa loompa. as the extreme darkness ensues i walk over to the oompa loompa next to friend b. 
i went for the soft cupping action (haaaa gayyy), not the hard slap we usually go for. something felt strange about larry's buttcheek. 

it was not larry. larry squats. larry squats a lot. 
this butt was soft like a pillow.

larry was not the only oompa loompa on stage that night.
to my horror  i had grabbed a girls butt (lets call her mary). mary is someone who i had never spoken to, and we are both in relationships.

 
we all had a great laugh about it. she now grabs my butt every time she sees me.
all is well.

TIFU by trying to slap my dude friends ass