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10.
1) Someone big and fat

2) wideload

1) You are shamu of all shamus!

2) You're blocking the hall shamu!
 
1.
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
 
2.
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
 
3.
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
 
4.
Usually refers to a private detective or a cop working undercover.
"So you're a shamus, Mr. Marlowe?"
by Dennis Baklan July 05, 2006
 
5.
the coolest whale EVER
person1- "Hey did you catch the Shamu show?"
person2- "Ya that whale is kickass!"
by plzno January 17, 2004
 
6.
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
 
7.
A private detective.

An award given to the author of the best mystery or detective story.
Sam Spade, a shamus in San Francisco, found the Maltese Falcon and a murderer.
by Joao Bufamarillo May 13, 2005