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A Penny Marshall is an older lesbian woman who seeks relationships ONLY with younger lesbian girls.

This is the lesbian version of a "cougar"

Can be a noun or a verb.
Doris is such a Penny Marshall. She will only date girls in their 20s.

My Grandmother totally Penny-Marshalled that salesgirl from the Gap..
by LaLaLaverne April 02, 2011
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