look up any word, like cunt:
 
1.
an extremely large amount of money
Rappers always got big bun in their pockets
by JusJeff November 19, 2005
 
2.
Infantile urban avenger. Known for wearing oversized diaper and baby bonnet. Uses pacifier as greatest weapon...Big Bun finds this ironic.
"Look out...here comes Big Bun!"

"Shit boy...you just got bunned!"
by Lil' Cinnamon September 22, 2008