1 definition by Tower defense

Top Definition
When a friend asks you how big your ex-girlfriends boobs were, but you say they we're one size larger.

Idiot 1: They we're Z cups Dude!
Idiot 2: O.... M.... G!
"Brandon always Overchestimates his ex-girlfriends; That guy is an idiot."
by Tower defense February 03, 2010

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