having alot of money. Usually used by rappers, ballers, or jamaicans to refer to their money, someones elses money. It can also be substituted with the phrase "lots of money"
Rapper:"Yo man, i be spending massive bucks on new beats."
Baller:"Yo shorty come over here. I got massive bucks."
Jamaincan:"Dat boy got massive bucks. eh eh."