Player 1 says what they insert into the slot machine, and Player 2 says what Player 1 recieves from the slot machine, in addition to inserting something in themselves, afterwhich Player 3 states what Player 2 got, and so on.
example:
player 1: i insert a dray bomb
player 2: you get a broken file of TPT, i insert a JACOB1
player 3: you get a Cracker64, i insert a pepe