cock pumping 

Someone who gives others hand-jobs.

An insult.

If john pumps neds cock two days after bob has gotten his cock pumped by john 4 days after bobby had his cock pumped by shirley who was the first to pump dannys cock who then shot shirley and raped her dead body.

--------------------

Horatio called Lenny a cock-pumper for jizzing on his tooth-brush.

cock pumping by BlackCloud March 2, 2004

pumping cock in sync 

usually performed while watching porn, but also applicable while watching live sex at a party

the act of matching the penetration depth of cock in observed fornication to the depth of one's own cock in one's own hand or other cock stroking device

balls deep in observed fornication pull hand down to match either to base of cock or to the limit of stimulation of hand

boxers all the way down, lube ready, porn site loaded and porn playing, reality melts away pumping cock in sync, usually jizzing before video ends

repeat until unable to get hard again in lieu of fornicating.

pumping cock in sync by pumps alot April 28, 2012