Technique rumored to have originated at 320 N. Tallawanda in which the speed of the gentleman's pelvic thrusting changes from super duper fast to slow as molasses and everything in between, thereby enhancing the pleasure of his lady friend and delaying his dick sneeze.
Brian: What? Did you say your girlfriend had trouble getting off last night?
Dan: Yeah, until I invented changing speeds.
Dan: Yeah, until I invented changing speeds.
by Dan Neville May 30, 2006
Get the changing speedsmug.