New England Patriots -- Barack Obama Cracks Deflategate, Gronk Jokes

President Barack Obama went in way harder on the New England Patriots than Seahawks coach Pete Carroll did in in the Super Bowl -- unloading a ton of jokes poking fun at the champs.

Obama had his A-game working as he ripped Bill Belichick, Rob Gronkowski and even attempted a Boston accent. Fittingly, the joke that fell most flat ... his Deflategate material. The Pats did not seem amused.

Darrelle Revis was also at the event ... which could've been awkward since he left the team this offseason to sign with the rival NY Jets. 

Pats' Super Bowl hero Malcolm Butler (who was singled out by Obama) told TMZ Sports it was no big deal having him there. "We all went to war together, we all practice and work hard together. He earned it just like we did."

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