n. A derivative of the "motorboat" in which one places one's lips and
cheeks against the
vagina, then shakes the head from side to side, keeping the lips
slack, so as to produce a "bu-bb-br-br-bb-bur-bu-ber" sound.
(See also: motorboat)
She
said she'd seen and done it all, and nothing I did could
surprise her -- but then I put on my best
Sean Connery and gave her the submarine.