Definitions by ChrisRoma

Feinberg 

When you are having sexual intercourse in the missionary position, get a stable fist plant at both left and right sides of her body and vigorously shake the bed to give her vagina a stimulating vibrating effect while your penis is inside of her.

Materials Needed:

-Springy Mattress

Girl: "OMG what was that?!?"

Guy: "The Feinberg"

Feinberg by ChrisRoma November 19, 2014