Pumpee is UK slang or Toronto slang for a “handgun.” Usually used in rap songs such as “Mans not hot” by Roadman Shaq. Pumpee can also be slang for any kind of gun that a person can use to threaten another person in combat.
A song made by Foster The People named after the luxury footwear. It's known for it's particularly upbeat yet unsettling musical composition/instrumental, and dark lyrics regarding a troubled youth named "Robert" who has fantasies of shooting up his school.
If you hear someone humming this song... particularly if they're white, named Eugene, have a bowl haircut, wear a trench coat/fedora/tie under shirt/etc., sport a neck beard, and/or if they have known association with the brony, weaboo, or furry fandom. It's best if you vacate the premises ASAP.
Essentially, Pumping and Dumping refers to chopping and screwing a dubstep song. Much like Dj-Screw chopped dirty south bangers, pumping and dumping lowers the pitch and tempo of the song, and emphasizes the LFO wobbles. It actually resembles Purple more than dubstep. And there is more chopping, to the point where only the skeletal structure of the song is faintly present. This began Sept 22, 2011 and was created by B-Pride.
Yo! You hear that new Caspa joint!? B-Pride pumped and dumped the shit out of that track, that filthy felon!
The phrase 'pumped up kicks' basically means shoes that are very expensive. It could also be taken as it's non-literal term meaning 'the latest and greatest apparel items'.
Did you seeJohn come by? He had some pumped up kicks! What a rich asshole.