A "long bomb" home run as first described by Atlanta Braves career player and third baseman Chipper Jones (#10). Mammo is sometimes associated with the term "yicketty" which is a general term for a homerun coined around the same time. Both terms were made popular by the Chipper Jones tweet: (see example)
Chipper Jones: "Mike b and jhey go yicketty! The roadrunner went mammo! And the Bravos have a winning road trip. My kind of day off, no action!!!”

roadrunner-Juan Francisco
Mike b- Michael Bourn
jhey- Jason Heyward
by Dolemite350 August 11, 2012
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Hair on a girls tits and/or nipples.
She is fine, but I hear she has some wicked wooly mammos.
by dirtysteve May 30, 2007
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Short for wet mammogram. When you place your breast into a teacup and pour hot water. And then you steep it with hot water.
Get your sick ass to the kitchen and fix yourself a wet mammo.
by themilkmaid October 14, 2021
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A grandmother type who is a combination of Mrs. Claus and Mary Poppins. Although she is a person of short stature, she has a heart as big as Texas.
" Fine, I'll just ask Mammo!"
by mllssa December 9, 2016
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