Davy Jones' Gravy is a dark, murky fecal/water combination that is the result of a particularly non-solid bowel movement, obscuring from vision all below it's putrid depths. Commonly found in public restrooms and port-o-potties.
I went to use the outhouse at the construction site, but it was so full that my balls dipped into Davy Jones' Gravy when I sat down.
verb: when part of ones hand is inserted into a sexual orifice of his/her significant other, then is used to shake the hand of a direct relative of the significant other before a proper cleansing of the hand occurs
person 1.
dude, so while i was visiting my girl, i fingered her in the basement while the rest of the family was upstairs. later when i met her brother, i totally gave him a Davey Shake. that poor guy second handedly touched his sisters vagina.
person 2.
u do realize ur goin to hell for that right?