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another name for ass. usually used to describe a girl with a nice ass.
Damn she got a rump shaker!!
by Lunatic January 29, 2005
rump shaker (n.)a synonym for a nice ass (HOPEFULLY/PREFEREBALLY a FEMALES!!!)
a sket "my RUMP-SHAKER's my money maker"
by debby March 18, 2005
rumpshaker is often reffered to a "phat booty"
" That girls got a rumpshaker"
by godfrey March 12, 2005