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: i'll keep this short and sweet (sort of).

i went to the movies with my dad last night to see kingsman: the secret service. he was running late and we ended up getting to the theater 20 minutes late, which i thought was fine because they always run previews for a long time anyway.

so i gave the theater guy our tickets while my dad got the popcorn. he told us to go to theater 6, so i headed there while my dad was standing in an oddly long line.

i got to theater 6 and previews were still playing. then the lights dimmed as soon as i walked in. i made it just in time, great :) . so i sat there for 10 minutes while the theater packed up. i thought it was odd that a theater would play previews for 30 minutes so i got up to make sure i was in the right theater. and my dad still wasn't here... odd.

yup, theater 6. yup, my tickets say kingsman. what's this? i have a ticket stub that says 50 shades of grey? oh shit.

apparently the booth we bought the tickets from fucked up and gave us an extra ticket to 50 shades of grey... and the guy tearing the tickets saw the 50 shades one and ignored the other tickets.

so i walked over to the kingsman showing (after telling the people of their mistakes) and saw my dad standing near our seats, looking for me. apparently something even worse happened to him.

...

my dad's fuck up was even more embarrassing than mine. remember the long line? that's because a bunch of women were buying wine from a movie theater right before watching 50 shades of grey (weirdos). so there was a constant flow of women walking into the theater. then there's my dad, who looks like he's 65. he's carrying a large bucket of popcorn with a bunch (like, a lot) of crumpled up napkins (because the popcorn is always buttery and messy).

a 65 year old guy walking in with a bunch of crumpled up napkins to 50 shades of grey, looking around for me and walking up and down the isles while the packed theater of women watches him silently. yikes.

at least my fuck up wasn't as bad as his. well i guess it was the theater staff's fuck up, but it still sucks for him.

TIFU by arriving 20 minutes late to the movie theater