look up any word, like dirty sanchez:
 
1.
When a women's vagina is very very loose, it is said to be 'gapped out'.

This is sometimes the result of genetics, however, it is much more commonly associated with whore-ish behavior; slutting around like a hoebag, banging dudes like a dirtleg, getting blown up like The House of a Thousand Cocks, etc.

The gapped out woman may have trouble keeping tampons inserted, or may be unable to tell 'if it is in yet'.
I finally banged the office skank - that slizz was so gapped out, it felt like throwing a toothpick into a volcano.
by RPMcMurphy December 27, 2011