A cannabis joint of unruley size. Usually pertaining to a double papered joint that while of regular length has a disproportionately wide girth.
Yo, I just rolled up a fatty boom-batty jay of this skunky ass weed yo! Were gonna get so high...yeah!
by ChunkyD August 14, 2006
Get a fatty boom-batty mug for your guy Callisto.
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 04, 2011
Get a Fatty Boom Batty mug for your father-in-law Vivek.
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 09, 2003
Get a Fatty Boom-Batty mug for your mom Riley.
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 18, 2003
Get a fatty boom batty mug for your Uncle Abdul.
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
Get a fatty-boom-batty blunt mug for your brother Abdul.