1 definition by GP2010
PUMS Stands for someone "A girl usually" Who is both "Pissed Up" and a "Massive Slag".
"Pissed up" being used to describe the fact she he actually Hot, and usually smashed on Lambrini.
"Massive Slag" being used to tell you mates how she is a slag, just because you, in reality, dont have a chance, or that she likes cock, and this is pubic knowledge.
It enables you to CODE that someone is Pissed Up Massive Slag.
Alex: OMGWTFBBQ check her out ('points')
Matt: PUMS all day long..
Alex: Big MS, seen her on JBG a few times.
by GP2010 Jun 2, 2010 add a video