moist gutter Posted in M Best definition moist gutter A particularly messy woman’s vagina. Usually as a result of a large gangbang or orgy. i turned up late the other day and was at the back of the queue. By the time it was my turn it was a moist gutter. How satisfied are you with the definition? Looking for moist gutter meaning? Delighted that you discovered the greatest determine on our web site! Recently this definition was actually observed 113 times.