1. The female form of the noun cock block.

2. Also a verb with the same meaning as cock block
Ashley: Hey, let us use your bed.
Amanda: No, I'm studying.
Ashley: Come on, don't be a vag block.
by Amanda March 9, 2005
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The opposite of cock blocked.
A.K.A. a female fuck blockage.
Those dudes totally vag-blocked me from jumping on that dick. boo yah.
by Erlexa March 31, 2008
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