(verb) 1. the act of motorboating another's breasts while masturbating. 2. masturbating to the thought of motorboating another's breasts.
by Hairy Peter October 11, 2012

To motorboat oneself
Big-Boobed Beryl: "Whoa, I can totally motorbate with these puppies!"
Tiny-Titted Tracy: "What's that you're doing Beryl?"
Big-Boobed Beryl: "You're too small to learn motorbation"
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See motorboat motorbate motorbation motorbated orabation
Tiny-Titted Tracy: "What's that you're doing Beryl?"
Big-Boobed Beryl: "You're too small to learn motorbation"
--
See motorboat motorbate motorbation motorbated orabation
by louleykrista August 4, 2011

by The Utco 4 June 5, 2011

Somone who gets off without intercourse through the act of motorboating. This could be either person involved.
Dave's parents discovered he was a motorbator when they walked in on him and the stripper with implants just as they hit maximum RPM.
by DirtyOldWordsmith November 1, 2022

I motorbated with Sydney last night!
by GassySellsDankWeed March 31, 2015
