2 definitions by Johnson Smith Esq.

Having excellent hand-eye coordination, due to excessive playings of 'Contra', a true masterful video game released on the original NES system in 1988.
"Some good contracentration you got there, man!"
"You know contracentration saved your a** right there, sucka!"
by Johnson Smith Esq. December 11, 2006
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The act of a unique handshake, in which you place your hand in the formation of a letter 'C', then proceeding to grab the forearm of the given recipient, so in turn, both subjects' hands are latched onto their counterparts forearm, then proceed to grunt & behave in a macho army fashion.
"What, you scored 20 bucks!? CONTRA HANDSHAKE!"
"Thank you, my brother-in-arms... (Contra Handshake)"
by Johnson Smith Esq. December 11, 2006
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