To engage in the act of coitus with an overweight girl, but with extreme physical force and a great passion.

Drunken sex can often be classified as a "Moby Dicking", due to the lack of judgement, but the intact passion of lovemaking.
"Can you believe Hank beats his girlfriend?"
"Yeah, I heard about that. I bet when they're alone she gets a solid Moby Dicking."

“To the ass, I grapple with thee; From Hell's heart, I hump at thee; For hate's sake, I shoot my last load at thee!"
by lordmb April 12, 2010
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The act of covering your dick in baby powder and slaps someone in the face once or more leaving a white mark resembling a white sperms whale
My girlfriend was being annoying so she got moby dicked
by Moby dicking August 15, 2015
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a large, very pale penis. Named so for the white whale in the Herman Melville novel of the same name.
James was shocked when he lowered the man's boxers and was greeted with a Moby Dick.
by The Kinky Bruin July 27, 2014
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When you are performing cunnilingus on a not so fresh female. You become angered that she smells so you decide to give her a whiff of her own medicine. You then pretend that you are going to come up to kiss her and instead conjur up a burp and blow the smell directly into her nose.
One time I was going down on this chick and she stank real bad. I decided to get that bitch back and gave her a moby dick. She coughed and hacked real bad
by Savage11 November 18, 2005
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When a guy goes out into the ocean for a swim, begins to float, and spanks it so he spews while floating in the water.
Hey, Diones is about to spew! There he blows, that Moby Dick son of a bitch!
by Bryan Eaves June 26, 2006
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Your girlfriend is giving you a hummer and you unload so hard that it squirts out her nose.
"It had been so long since his last encounter with a woman, when she put his weiner in her mouth, he ended up performing a Moby Dick."
by Nonscrubber January 17, 2008
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