Top Definition
A phrase commonly pulled out by the dumbest person in a 5th/6th grade math class. When the teacher asks how to find the area of a rhombus, this kid normally turns to the quietest, least-expecting kid in class, causing outrageous reaction
Mr Sanders: The height is six inches, and the length is 14 inches; find the area of this rhombus.

Joe: I'll rhombus your mombus

Derek: You already had my dad
by Alan Aldridge November 16, 2007
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