A big motherfucking joint, at least 2 big rizla's.
As I came into Sam's room and he was just rolling up a Fatty boom batty, next news he blazed that motherfucker up and it smoked goood!
by Glaswejin July 4, 2011
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A large, oversized spliff, usually made with weed rather than cannabis resin.
"Let's stay at home and smoke a Fatty Boom-Batty"
by Ross Purvis November 9, 2003
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a big, ugly, overweight stupid or foolish person
Hey, get Fatty Boom Batty over there to
finish jacking my truck up
by King Shit January 19, 2003
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What you need is a fatty-boom-batty blunt, and I guarantee you'll be seeing a sailboat, an ocean, and maybe even some of those big-titted mermaids doing some of that lesbian shit.
by deadheadrik August 17, 2009
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Also used in drug references
"I'll tell you what you need is a fatty boom batty blunt, then you'll be seein' a sailboat, an ocean, and some of those mermaids doin that lesbian shit!"

-Jay, as played my Jason Mewes
by Double Threat January 16, 2004
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n. A fatty boom batty is packing a fat lip of dip and being fratastic. Throwing in a fatty boom batty is a past-time assosciated with playing video games, watching tv, and in the scummiest cases...making out with a girl. Fatty boom battys are best when used with skoal mint, skoal straight, and bandits. The ultimate fatty boom batty is also known as the Civil War, preferrably with a full sample tin of skoal minter on the bottom and mint bandits on the upper. I t is not a fatty boom batty if you dip while beating off, then it is just dirty and scummy and for pussies not man enough to get on bitches with a true fatty boom batty in. If u want to be really fratty, then call it a fratty boom batty and pack 8-10 lippers a day.
"I need a Fatty Boom Batty!!!" "Lipppeerrrsss!! Yea, fatty boom battys!!!" I love fatty boom battys
by Mark Payne December 16, 2006
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