1 definition by TellJoolz

Obligatory RnB Dance move.
You see this at every RnB night club.
The move is initiated by a
male grinding his groin into a female's loins. Aka a mashing of the genitals, hence the Jenny Mash.
Check those two on the dance floor out! They are doing the Jenny Mash.
by TellJoolz July 27, 2008
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