The Minnesota Vikings wide receiver spoke to Matt Harmon on Radio Row at Super Bowl LVII about how his popular dance ... being asked? JUSTIN JEFFERSON: Can you teach me how to Griddy?

Why? Because Jefferson looked at defensive back Devon Witherspoon while the Pro Bowl wideout was dancing. Justin Jefferson just got FLAGGED for hitting the griddy and looking at Devon Witherspoon.

Justin Jefferson ... play on the field and his Griddy touchdown dance, it’s no surprise that plenty of kids want to wear his jersey. And according to NFLShop.com, Jefferson has the 9th-best ...

Against the Chicago Bears on "Monday Night Football," Vikings wide receiver Justin Jefferson ... in the first quarter, Jefferson initially did his signature Griddy dance celebration.