i got totally fucking wasted in college, and i was running down the street pulling up "for sale" and politician support signs on people's lawns and moving them to other random houses further down the block (har har) at which point I sliced my hand open on one of the signs. I didn't notice the cut cause of the booze and kept it up for a little while longer, COVERING myself in blood in the process (like john McLane amounts,) until I passed out in my friends' bathroom.
Some chick walked in the next morning and lost it cause she thought i was dead, which woke me up and then i went a little crazy cause i couldn't remember any of what happened and i was covered in blood.
my friends explained it to me over some breakfast beers while i mopped up the floor and walls of their bathroom.