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1.
BCWW is an acronym for "Bow Chicka Wow Wow." It can be used to describe the act of sex, but is also sometimes used as a form of the bases, B for first base, BC for second, BCW for third, and BCWW for a "home run."
-Yeah, I "BCed" with him last night.

or

-You guys have been dating for two months! When are you going to BCWW?
by theh20girl April 19, 2007