I have a couple that are equally embarresing.
First was my 30th birthday last year, we had a preseason rail jam. Came off the rail weird, reached out to catch myself like an idiot and landed on my wrist. Didn't really hurt, so I unstrapped and hiked back up. Guy behind me in line "man your wrist isn't right". Looked down to see all the glory and a nice misformed wrist. Went to the hospital (drove a stick shift car home mind you), they basically said "oh it's just sprained, the swelling is all youre seeing, dont worry about it". Worked for 3 days, it still looked swollen but not terrible, didnt wear a splint even. Horrible pain set it, went to an orthopedic doc and he told me my wrist was broken in 3 places.
The second was getting drunk at the ski resorts bar (dont worry I wasnt driving), we decided to go hit the park after drinking. Yeah enough said. Decided to try a misty/corked 5. Stuck upside down mid spin. Was only a 35 footer I think but it didnt feel too good.