What is Piston Pump?
1.
Slang referring to an aggressive, furious, rapid act of fellatio. The piston pump receives its name from the rapid head movement exhibited by the provider of the fellatio, which is said to resemble the action of a moving piston. This is also referred to as the jackhammer. The piston pump is much sought after in the world of fellatio and should be received with grace and humility.
Man, that piston pump was great. I have never been sucked off so furiously.
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this is where you go at 4am to get some badass grand slams and eggs over my hamy's. aka dennys
bro fuck its 4am im fungry, dude le..
