Kevin Hart & Olivia Munn Trade Tit for Tat on Lively Set of 'Ride Along 2'

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Kevin Hart and Olivia Munn showed ET how they like to mix it up on the Ride Along 2 set.

The co-stars kept us entertained in between scene set-ups, trading barbs back and forth for a good-natured round of jawing that left nothing off-limits. Hart even went after Munn's NFL quarterback boyfriend Aaron Rodgers.

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"You know what the worst part about the Packers is? Their offense. Dig!" Hart teased. "That's a dig."

Munn, Hart and Ice Cube play undercover cops trying to catch drug lord Benjamin Bratt in the comedy sequel. While there's plenty of jokes, there's just as much action, and Hart joked that he was following the Tom Cruise method for making great action scenes.

"I'm actually doing a lot of my own stunts," Hart told ET's Kevin Frazier, showing him a tiny scratch on his finger. "I've been hit by cars."

The action star role required an action star body, but Hart was prepared. He practically lives in the gym.

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The comedian frequently posts gym selfies of his regular training sessions and started holding spontaneous 5K runs during his comedy tour stops.

"I'm trying to get the cover of Men's Health," Hart said. "Give it to me!"

Ask and you shall receive seems to be the rule for Hart. He got the cover of the magazine for its March 2015 issue.

Ride Along 2 opens Jan. 15, 2016.