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1.
When a guy is having sex with a girl and she is bored so she watches tv as he is pumping away like a chump.
I watched part of an infomercial while he was chump pumping away. Sex is soooo soo on boring with him anymore
by athena2013 November 17, 2013
 
2.
A term used to define one who continually loses at 7 ball.
Boy, Rob sure is a Chump Pump!
by RC3 September 11, 2007
 
3.
A person that manually bails a household sump after the electricity fails and they do not have a generator.
Dave and Sue spent all Saturday night working the chump pump because a tree took out their power lines.
by JMcFlyasdf September 03, 2011