In a video posted to social media by Mitchell, he followed Tyson to his car in the team garage, where the rookie found it full of popcorn when he opened the door. Donovan Mitchell filled Cavs ...

Tyson opened the driver's door of his blacked-out four-door coupe to find it filled with popcorn. Sounds like you should've brought the donuts, @jaylontyson. :/ #LetEmKnow (🎥: @spidadmitchell ...

CLEVELAND — The first rule of being an NBA rookie: don't forget the doughnuts when it's your turn to bring them.

The prank involved Tyson's car and an absolute sea of popcorn. Donovan Mitchell and Tristan Thompson both posted videos of the reveal on Instagram. Tyson's car was also filled with signs that said ...