Top Definition
Doughy, linty, and salty goodness that builds up in the heaving and fleshy cleavage of women.
Like toe jam but in between boobs.
When I motorboated by favourite stripper DDDestiny, I choked on her week old mammajam.
by Capt. Scotty September 19, 2007
1 more definition
A musical pattern that has the power to blow peoples minds, it usually is only used in Heavy Metal rock songs.
"Come on ED !..Lets bust a massive monster mammajam!"
by Mammajam October 11, 2009

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