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a slang term for a brick of heroin which consists of five ten bag bundles.
Yo, my boy in the Red Acura has a big boy for $250!
by sin city bags July 07, 2009
a noun used to describe a bisexual male, specifically one capable of taking a very large dick.
person: man, andrew is such a buttslut.
other person: yeah, he's a real bigboy.
by annaayyy June 14, 2008
A redneck truck accessory hung under the back of the truck that looks like a very large human scrotum. nutsack

Bigboys are hung to let people know the truck and/or driver is masculine. It is all the rage, and they can be seen on lorries and bigrigs, as well as tanks in Iraq. Mel Tilleson sports chromed bigboys on his CXT.

Bigboys are larger than bumper nuts and are seen in different colors and materials that are chosen for further meaning. See truck nuts.
"Those bigboys sure aint pingpong balls, that driver must be the real thing."
by jrBman August 26, 2006
big boys are an 80 mg oxycontin. they pale in comparison to the oldschool 160's, but just get 2 and clean your spoon an it'll be allright!!!!
"what do you mean you want $60 for one of those big boys, I got em from you last week $45!!!!
by skunk379 May 23, 2006
A person who is cooler than everyone
Samuel Clements is a Big Boy
by ingradf February 02, 2013
Philly term used to describe 80 mg oxycontin.
"Yo cuz i need 3 of those Big Boy's."
by C-Bona September 11, 2008
40 ounce of beer
I was sippin a big boy and smokin a blunt
by just a cutty cut August 31, 2008