The act of inserting one's testicles into a girls anus, removing them and then slapping her in the face with said testicles.
"I gave that girl a sloppy d and then made her leave my house in a cab"
by Koryk November 26, 2007
2 more definitions
When a females dumper is so outrageously large it tends to look like a sloppy mess.
That stripper had such a sloppy d it shook like 20 pounds of jello.
by daking May 24, 2005
Another name for a dap greeting, or "knucks."
"Hey, man, I got some Sloppy D's for you!"
by LumberjackPirate July 08, 2011