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.
Q: Text: long time ago, but

i'm in class and my buddy tells me this hilarious joke about toilet paper.  but class is silent time, so i must excuse myself to the bathroom.  halfway down the hall, i burst out laughing, and in that exact moment, a mental disabled kid turns the corner and we lock eyes.  i'm dying, and well, he isn't.  i felt bad but then i went into the bathroom to laugh about toilet paper some more.
A: 
TIFU by laughing at the mentally disabled kid