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: pretty self explanatory. i was out on a run to try and clear my arteries after christmas. i gleefully ran into a muddy puddle, which turned out to actually be part of the lake i was running around. i think my penis actually retracted.

TIFU By running waist deep into flood water, thinking it was a puddle.