To fuck, bop, screw, bang, etc. but it is more-often-than-not used as a noun.

To have sex.

is to have intercorse, or gettin down.

An Extremely Moist Vagina - When a vagina becomes very moist that when being penetrated with objects or part of the anatomy its makes a noise that sounds like 'SQUELCH'

It is most Capital!

Soft and wet/damp.
Usually applied to wet ground or a female's private area.