not a drunken injury exactly, but it's a pretty funny story so I thought I'd post it here for you guys...
So the morning after a pretty heavy drinking night I was hungover as fuck, so went to shower to try wake myself up - not a good idea as I nearly fell asleep stood in the shower a couple of time - freaky feeling!
Anyway, get done in the shower, and when I'm getting out end up slipping cos of my wet feet on the floor.
Land on the floor, but it turns out I bounced my back off the toilet on the way down - the seat was up and I must have hit my side/back on the rim when I fell.
Cracked a rib, so could've been a lot worse, but the weirdest thing was that I ended up with a bruise shaped exactly like the toilet rim on my back - about 2 inches wide, with perfectly straight sides and a bit of a curve. TOILET BRUISE, yeah!