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: so i went to a gig last night and the bassist was the most into-it bassist i have ever seen, grimacing and hammering at his bass like a man possessed. after the show and having recovered from the drained torpor that only good doom metal can induce, i decided to buy a shirt. just before the show began i had passed by the merch stand and noticed a little cardboard sign saying 'back later!' but this had seemed irrelevant. i noticed the dude behind the stand looked like the bassist of the group i had just seen, but i figured he wouldn't be here, alone, behind a shitty plastic trestle table, selling merch. what follows is our exchange:

me: hi, yeah can i have that shirt over there. you know, you look a bit like the band's bassist.
he: ha ha, really, do i?
me: yeah you do.
he: ah, well thanks.
he looked at me like i was a bit of a whacko but i couldn't really figure out why, so i handed him the cash and went on my way.

i approached my buddies who informed me, with much mirth, that the guy was, in fact, the band's bassist.

needless to say i went back and said 'you are the bassist!' and he said 'yeah i know!' and i apologised and lost my shit a bit and told him how amazing they were and he signed my shirt. top bloke.

TIFU by telling the bassist from a band that he looked a bit like the bassist from a band