Verb- to wear a abnormally padded bra or other device that makes your boobs look 10 times (2 cup sizes) bigger.
-"Girl, you bombshellin? Your boobs look even bigger than Rachel's!"

"Yo, Gretchen must be bombshellin today... she's about to topple over from the size of those things.
by RaeiGiei May 22, 2011
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