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The act of when your girl is riding you in the reverse cowgirl position, you suddenly reach up behind her back, grab her pony tail, and then yank her down backwards in fast and forceful manner. Then, as if to be splashed by water, you cum in her face.
Man my girlfriend has been messing around on me, so last night I pulled the Shamu on her.
by JHornDog October 01, 2010
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1) A whale found at Sea World, does shows 5 times a day.

2) An obese person.
1) Look at Shamu launch that ragdoll-like whale trainer 50 feet in the air!

2) Hey, here's a cookie, Shamu.
by Skin-Nerd July 17, 2005
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Typically a really nice and trust worthy man, who will do anything to keep his partner happy. Does not like sadness and is always looking to save people and make things better.
Shamus is such a caring man.
by App June 11, 2014
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A fat goth chick. White skin, black clothes, hence, shamu.
Ugh, I went to the NIN concert, and there were a bunch of pizza-face shamus.
by Will August 29, 2005
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person1- "Hey did you catch the Shamu show?"
person2- "Ya that whale is kickass!"
by plzno January 17, 2004
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the act of being very fat and when people compare you to the whale "shamu"
That girls looks like shamu's twin.
by d April 19, 2004
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