Dad's Epic Katy Perry Dance Moves Caught on Camera

— -- When mom’s away, the kids -- and husband -- will play.

Take a look at this dad caught on camera dancing up a storm to Katy Perry’s “E.T.” with his two kids.

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His wife apparently set up the camera so the children’s grandma could virtually watch what they’re up to, but what she ended up catching on camera is even better.

Dad’s coming in like a “Dark Horse” with those epic dance moves, “Roaring” his way into viral video stardom.

We just wonder if this happened “Last Friday Night?”

The video has more than 66,000 views in just one day.