If you talk trash to Kyle Juszczyk, he’d better know who you are.

Otherwise, you’ll get a savage response from the 49ers’ nine-time Pro Bowl fullback.

George Kittle, on his “Kittle Things” podcast that he co-hosts with his wife Claire, revealed his teammate and close friend’s epic comeback line when an opponent tries to throw shots at him on the field.

“In football, one of the favorites one I heard was one our fullback Kyle Juszczyk uses if someone talks trash to him and he doesn’t know them,” Kittle explained. “He goes, ‘Hey, can you turn around so I can see the name on the back of your jersey? So I know who I’m talking to. Because I have no idea who you are.’ “

A guest on the “Kittle Things” podcast was NBA legend and Hall of Fame forward Kevin Garnett, who, in his 21 years of playing, was known for his aggressive, intense and often creative trash talk that he used to his advantage.

Even Garnett couldn’t believe Juszczyk’s trash-talking method.

“Oh man, that’s another level of disrespect,” Garnett said.

Garnett then gave Kittle all his tips and tricks to properly talk trash to an opponent.

Kittle, who already took notes from Juszczyk and used his teammate’s trash talk line last season, certainly will take notes from Garnett’s lessons.

Kittle and the 49ers (9-4) will enjoy their bye week before it’s all gas, no brakes and a little trash talk the rest of the way.

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