"You wanna know why Jews do play football??? To get their quarter back you cheap f*ck."

WAKKA WAKKA WAKKA!

Yeah, that was the kind of material Gronk was workin' with at the Roast of David Ortiz in Boston on Thursday -- where he dropped everything from black jokes to fat jokes to penis jokes.

Hey, it's a roast ... right?

Among the highlights ...

-- Gronk pointed out female comics he wouldn't bang

-- told Anthony Mackie (who's black) he was impressed by his role of Falcon in Captain America because he could fly "when he's not being chased by the cops"

-- told Ortiz he "jerked off" in his green room on the set of a Dunkin' Donuts commercial

There's more. Eight minutes of it. Enjoy.