1 definition by Richard Butts

Top Definition
When a woman (or man) has gained sufficient weight such that underneath their breasts (or manboobs) are two folds of fat forming a smaller secondary cleavage, it can be said that they have developed "undertits". Double undertits may be sighted in rarer cases, with triple undertits being an extreme rarity, while quadruple undertits is the oft-rumored holy grail.
Prima: Holy manboobs, batman! That guy has a set of quadruple undertits!

Secunda: I didn't know it was walrus season already.
by Richard Butts April 04, 2010
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