We're only in February, but the Summer of Gronk transcends seasons, and it immediately began after the Patriots' Super Bowl win last night. Here's pass-catching bicep Rob Gronkowski at the afterparty in the team's hotel doing some things with his arms to "I'm On One." Yes, he is wearing two hats backwards.

There's more. Via TMZ Sports, here's Gronk dancing onstage with Flo Rida, and Robert Kraft shuffling around to "Ima Boss":