But he did nothing.
Hart donned Johnson's already famous 90s look in black turtleneck, gold chain, jeans and fanatic packaging.
"That s ** t makes me laugh," Hart wrote in a caption of a split photo of him and Johnson in the outfit. "#NailedIt #HappyHalloween #PeepTheNapkinUnderMyElbow."
Hart also posted a video of him showing up at Johnson's outfit to cheat or cure.
"I killed him with my Halloween costume this year …," he wrote in the caption. "@Therock had the nerve to get to me."
Hart also used it for a little promotion, adding "We are launching a brand new trailer for Jumanji The Next Level tomorrow. Stay Here !!!!!! "
In the video, Johnson gets his own back, mocking Hart for not giving the diminutive star to King-size candy.
'Here's what you get,'" Johnson says of Hart. Little ones, mini like you. "