This term is used to describe the genatalia of a female who either: a) experiences excessive vaginal discharge during intercourse. b) has very recently engaged in an aggressive coitus session. or c) has given birth at least once, to your surprise upon entry.
Wow, as skinny as Sara is, she sure has a huge floppy slop hole. She must have a half dozen illegitimates out there. I thought I was doing a 5 gallon bucket of water.