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When a girls breasts are too big for her bra and start coming out the top, giving the impression of another set of breasts. *Originated by Mollyergits
"Did you see that girls quadbooble?"
"Yea, she's got two pounds of Jelly in a one-pound jar"
by Massaiah March 23, 2009

Words related to Quadbooble

doubleboobs megatits quadboobie two-sets