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2.
One who believes in manifest destiny, therefore able to dominate in all aspects of life including JV puck.

Common phrases utilized by the Bull include: "Yeaaaaaa Boiiiiieee", "Do you like to party? you must.", "One minute", and "Nizzaaaaww".
Sammy the Bull on right wing, Sam Lagor playing center, and Mara on left...blue line all the way baby.
by PJ Mara March 19, 2008
 
1.
See: Grass def.3, Snitch def.1, Rat def.1

Sammy the Bull is like a nickname for someone who snitches, usually getting the accused into some serious form of trouble due to their grassing. Comes from Salvatore 'Sammy the Bull' Gravano, who grassed on John Gotti.

Mostly used to describe those who engage in illegal activity themselves, and then grass about their so called friends, so that they themselves don't get into any trouble.
"And the Sammy the Bull award goes to, Fat Joe." - Tony Yayo (Tattle Teller lyrics)
by AshBartlett December 10, 2005