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v. int. The act of pushing one's face in between two ample breasts, and rocking one's head side to side very rapidly while making a vigorous, lip-vibrating "brrr" sound.

n. The sound produced when doing a motorboat.
Wouldn't you love to see Meatloaf motorboat Barbara Bush?
by Bill ewall March 26, 2004
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2
to bury ones face in some giant jugs and shake your face back and fourth while blowing out, and making a hubababa sound.
Man look at that rack!
yeah i'd motor boat them jugs all night long!
by kimbo April 24, 2006
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3
The act of sticking your face between a pair of ones breasts and shaking your head violently while making noices that resemble a moter boat.
Hey Jason, I heard you gave that girl a motor boat last night, you motor boatin son of a bitch!!
by Nathan Moreau April 10, 2006
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4
To submerge ones face in large breasts and moving your head back and forth, flapping your lips, in turn making a motorboat sound.
I just motorboated Marygrace, I almost suffocated in those funbags but it was superb.
by Urban Dictionary November 26, 2006
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6
When you blow a raspberry in between a girls tits, making a motor boat sound
Carol was so drunk the other night, I gave her a motor boat when she showed her tits
by D January 31, 2005
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7
A male or female who places their head between a female's breasts and shakes back and forth while humming, producing a sound similar to a motorboat in water.
Since she wouldn't give oral sex to me, I motorboate her instead.
by ajs86 February 03, 2009
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