Miesha Tate -- Flips Script On Vegas Cop ... Lemme See Dat Ass! (VIDEO)

This is pretty funny ... Miesha Tate exacting revenge on the cop who checked out her ass during the UFC 196 weigh ins -- by ogling him right back.

The cop -- Officer Russel Mettke -- became a viral sensation last week for using extreme side-eye to sneak a peek at Miesha's butt while she changed on the UFC stage.

Miesha wasn't exactly offended ... in fact, she thought it was hilarious -- and went over to the LVMPD to get a little payback.

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