dongknocker

a male or female who engages in oral sex with more than on man a t a time

that girl is a total dongknocker

dongknock

When the penises of 2 dudes in a threesome with a chick accidentally touch.

Joe: "How was that threesome last night?"
Bill: "It was going really well until me and Bob dongknocked. Then it was just awkward."
Jow: "The chick was hot though right?"