Mine, I think, is the worst yet.
In junior high I was a dweeb. I was really, really short and pretty unathletic. We had a sub teacher for gym class, and we were playing flag football with the sub as the QB for both teams. The other kids had been making fun of me for various reasons, and the sub pulled me aside and said, "Hey, I'm throwing it to you, go deep, ok?"
So I went deep. I had mostly been playing line, so nobody really expected me to go for a pass. So I turn around, and the sub throws this perfect pass. I'm like, hell yeah, I'm gonna catch this mofo . . .
Then Mike f*cking Walker appears out of nowhere, picks off the pass, and returns it for a TD. You know the kind of guy . . . the functionally retarded type who only show up to school for baseball, basketball, football, and track. Well old Mike lettered in all 4, and he had a part time job of treating me and my friends like crap. On a happier note, Mike got his girlfriend pregnant in 8th grade and dropped out. Now he's probably making minimum wage somewhere and I'm well-paid and successful.
I wish I had caught that pass, though. 🙁