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: obligatory "happened two years ago" forward.

i had the bright idea to sit on my then-boyfriend's lap while he was sitting in a poorly constructed chair. i leaned backward to pick something up from the floor, and as he shifted so i could reach it, the seat of the chair fell out from under us. i fell off his lap, landing on my back. i tried to grab onto him, so my spine was bent right where i landed. it knocked the air out of me, and i was in so much pain that i thought about going to the hospital. weeks later it still ached, and i had to go to the chiropractor and explain how i soberly fell out of a chair. my chiropractor couldn't even do the adjustment without applying electrodes and heat to my back because the muscles were so jammed up. now my spine dips in where i landed (or maybe i just have scoliosis, idk) and can crack just by moving my shoulder blades back. it still aches a fair amount for a few weeks at a time every so often.

TIFU by sitting on my boyfriend's lap