1 definition by WeLuvDMoon
When a female rubs her face in a back-and-forth motion against a mans scruffy beard because she loves the feeling. So named, because of a resemblance to the act of "motor boating" a female's breasts.
I just saw Seth and his amazing facial hair; clearly, I couldn't help but spend some time motorbearding him!
by WeLuvDMoon December 25, 2013