Ok, let's hear it.

I'll start off. During my student days we celebrated someone's birthday starting at lunchtime at an off-campus pub. By early evening, we were 'birling', and on the way back to the halls, I decided to swim across the artificial lake (as you do). I got halfway across when my pants came off around my ankles - damn near drowned. I made it to the other side, but lost my pants and had to walk back to the halls more-or-less naked with lots of people about. I was so drunk I thought this was funny. I guess it still is.

I'm sure some of you guys can top this...

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'79 280SE
'87 560SEL
'83 280CE
'01 Nissan Micra
'98 VW Passat
'83 911 turbo