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: full disclosure, this actually happened about 5 years ago, but i feel it's an entertaining story.

my sister had recently gotten engaged and i attended her engagement party.  one of the goofy little party favors was a plastic engagement ring, which found its way into my pocket.  

about a week later, there was a beer festival in town that i attended with my girlfriend of about one year.  at this festival, you buy tickets at the entrance which you exchange for food and drinks throughout the event.  i bought a bunch of tickets, stuffed them in my pocket, and we were having a great time.

quite a few beers later, my tipsy girlfriend and i head over to the beer tent to spend the last of our tickets.  she asks how many we have left, so i fish around in my pocket for a bit and give her a puzzled look.  i said "i can't find any tickets - all i feel is this ring."  apparently i was wearing the same pants as i wore to my sister's engagement party.

i scoop the ring out of my pocket to examine it, then notice my girlfriend has a bunch of tears in her eyes.  "what's going on with you?" i said, before i realized she thought i was proposing.  i just gave her a little sheepish look and said "whoops, sorry, this must be left over from that engagement party... oh, here are our tickets."  it took her a few minutes to get over it.

the story has a happy ending - we had enough tickets left for two more beers and they were delicious.

TIFU by Failing to Empty my Pockets