1. a person that never cleans up, usually a roommate, and will never claim his/her dirty pile of shit.
2. an extremely intoxicated individual that can barely function (see blackout) and proceeds to break shit and fall on everyone.
1. Steve- Hey, who the fuck left the milk out?
Rod- Not sure, it wasn't me though.
Darin- Bullshit. Your slopass had a glass of milk before you went to sleep.
2.John- Did you see that chick fall a second ago?
Nick- Yeah, she's a being a real slopass.