Term used to describe a crotchrocket motorcyclist that is too far forward in riding position.
Hunched over as far as possible in an attempt to achieve better aerodynamics.

Consequently, hits a bump and crushes his own nuts.
Dude did you see that tankbanger go by?
by Engineer Tow Mater November 11, 2011
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The act of fucking someone while drunk/messed up.
I tankbanged that hoe Jenny last night, and I barely remember it.
by Robbb January 13, 2007
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