Richard Sherman -- Patriots Trash Talk Begins ... with a Llama!!

So, Richard Sherman and a llama walk into a bar ...

Actually, it was a studio ... and one of them launched into a expletive-laced rant against Bill Belichick, Tom Brady and the New England Patriots, in general -- kicking off Super Bowl smack talking season.

The whole thing is an ad for one of Sherman's sponsors -- but the Seattle Seahawks superstar might wanna take notes. The llama gets in a pretty good jab at Brady's favorite footwear.

Only thing missing? A shot at Brady's balls.