Top Definition
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"
by ChrisRoma November 19, 2014
3 Words related to Feinberg

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