Top Definition
When nipples are so erect they acquire the shape of common household marbles, furthermore rolling off the body and occasionally down the street.
Matt- hey linds, you sure you're okay?
Linds- yes, why?
Matt- because i think your nipples were just bouncing down the street making shrill banshee like sounds
Linds- oh, now that you mention it, i have no areolas
Matt- go catch your marble titties this instant!
by erect nips February 24, 2009
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