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 see John come by? He had some pumped up kicks! What a rich asshole.
(Pronunciation: Perp-uh-doo-dull) Noun. Elderly/old/ancient person; usually named "Barbara", "Ethel" or "Walter". Side effects: Arthritis, wrinkled balls, saggy tits, bad attitude. (Abbreviation: purp)
"I love my dear old grandpa, but I don't enjoy visiting him in the nursing home because I hate being surrounded by purpadoodles!"