Craigslist can be a useful tool for many things: renting an apartment, getting rid of an old lawnmower and finding the nameless dude who knocked you up at a Motorhead show.
Here's the post:
"Me: Blue hair, silver tube top, fishnets, Knee high black biker boots.
You: Red mohawk, black pentagram gauges, viper piercings.
I was grinding on you in the pit, then we went to the bathroom, and got f***ed up. You had a nice c**k and I was wasted so I let [you] raw dog it in the stall. You were really good and you had to gag me so I would make too much noise.
Anyway I'm pregnant. It's yours. contact me if you want to be part of your child's life."
Tips to this address. Man up, dude. Call her.