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 my band had just finished a show and we were loading out equipment. i was in a hurry to get home as i had to be at work early the next morning, so i was keeping my post-show interactions with the bar patrons brief. it had been a really great set.  we had quite a few folks coming up to us and telling us as much, to which i would respond with a quick handshake and genuine but brief, "thanks so much for coming out" then continue on my way. 

just outside the exit where i had parked my car sat a shirtless man in a wheelchair, having a smoke, his wheels propping the door open. he was missing both legs below the knee and his left arm just below the elbow. honestly, he was a bit in the way as we tried to walk drums, amps, and cases through the doorway, but we made due. as i was coming back up the ramp to get the last of my gear, i noticed him gesturing in my direction. and by gesturing i mean he was raising what remained of his left arm as i was passing by. like i said earlier i was in a hurry and pretty much set to auto-pilot. so when he raised his stump, in an effort not to offend, i reached out, grabbed ahold and shook it vigorously as if meeting a potential employer for the first time. 

now before moving on let me explain, i had the best of intentions. somewhere in my mind i suppose i assumed that this unfortunate man had been marginalized because of his condition. therefore, by reaching out and taking ahold of his arm, i would be offering him a hand of compassion and of respect. i would be showing that i was not put off by his disability, in fact, i refused to see it at all. 

and then it became very clear that a make-shift handshake was not what this man had in mind at all. rather than the usual, "hey, great job tonight, man," i was caught off-guard by his rather frank, "hey man, that shit sucked." he went on to advise me on how to better shape our sets in the future which included an exhortation to "play more fucking metallica." it became clear that his gesture toward me had not been one of an inviting clasping of hands, rather, his intent was a stern scolding. in my defense however, due to his lack of any digits that would imply either a positive or negative intent, i chose to believe, perhaps in my arrogance, that i was being paid a compliment rather than a criticism. however, i had already taken ahold of his remaining arm and any retraction could be interpreted as insensitivity on my part. so just to make sure we were clear as to my intentions, rather than backing off, i began to pump this uneven "handshake" even more. it was about this time that i felt movement in my grip and looked down and realized that a revolving joint remained at the end of his arm and was rotating counter-clockwise, trying to squirm out of my grasp. as he went on to chastise my band for its lack of metal i continued to smile and thank him for coming out to support us. sometimes in those situations that's all you can do. smile.

TIFU by shaking a man's stump.