1 definition by Sir Dave Longpipe I

A female version of "Cock Blocking". If a girl is out with a guy or girl and prevents them from getting lucky due to something they do, or just by being there.
Dave - Why am i having no luck tonight with girls tonight?!?!?

Tracey - Oh, that might be my fault, inadvertent Great wall of Vagina. All the girls must think you're with me.

Dave - Well fuck off then! I want to get lucky!
by Sir Dave Longpipe I January 10, 2014
Get the Great Wall of Vagina mug.