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1.
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
5207 1562
 
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
1905 722
 
3.
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
2146 1143
 
4.
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
1124 483
 
5.
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
881 549
 
6.
An engine propelled seafaring vehicle.
What a nice day for motorboating.
by Jersey_Guido December 04, 2008
1564 1318
 
7.
( . )BPBPBPBPBP( . )
The sound of the motorboat between a nice rack! Motorboat
by biteme2 November 18, 2011
598 363