Definitions by $ FLIP $

Boomin 

makin a lot of money in a short amount of time by sellin a product... especially tax-free products; (weed, shoes, apparel, mixtapes, etc.)

Customer: How the sales goin for u?
Seller: Mane I got this shit boomin... I made $450 in a hour and still makin money.

Boomin by $ FLIP $ March 21, 2009