What is Potato Mashing?
1.
The male equivalent of "Scissoring," in which two men interlock their straight legs and grind their genitals together, resembling a pair of interlocking scissors.
They were potato mashing all night long!
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1.
The current girlfriend of a person you tag-teamed a girl with in the past.
"Joey and I had a three-way with Shelly about two years..