Sinjury

an injury, illness, or condition derived from the indulgance of decadent or promiscuous activities. Any injury that happens while drunk and/or partying, usually hallmarked by a either not being able to either remember, or gracefully explain, how it happened.

Whoa, check out this bruise on my leg, where did it come from?

Dude you were totally wasted, thats one serious sinjury