There's_a_Is_a_bell's definitions

MAMM

abbreviation for "middle-aged molester man".

This word is most commonly used by teen-aged girls to discribe any middle-aged man who has creeped them out.

(girl): Eww! that guy is a creep
(other girl): Gross, he's totally a MAMM

by There's_a_Is_a_bell February 4, 2010