I have 2
First was when I had my civic and the clutch went out the first day I took it to school during lunch. Bad enough I had my boy in the car, but there was a really hot girl too! :-(

2nd was wedesday when I had to take the RS to my uncles body shop and explain to him that I managed to run into a 9 foot high stone wall.
what made it wose was that I had bought the car from his shop, so all the mechanics knew it since it had just been there to get fixed, so everyone was like WTF? didn't we just send that thing out?