In the scene where Chris Rock and his girlfriend are hiding inside of the laundry chute, Chris Rock is reaching into his pocket to get his phone. While doing this, he is hanging onto the top of the chute with his other hand. With one hand in his pocket, and the other one clinging for dear life, Chris Rock lifts up the hand hanging onto the chute and readjusts it about a half foot to the right. I don't know what kind of antigravity device he was using because if he picked up his hand, he would have a pretty long fall to the bottom.