In the episode where Drake and Josh make thier house into a hotel for a bunch of college kids, near the end where they're cleaning up the house they get out the game 'Trouble' to "act natural". Josh says, "1,2,3...4." Then Drake says, "Aww, you lose a turn Josh." You can't lose a turn in Trouble.
They weren't actually playing the game, so maybe Josh didn't realize it was Trouble (he was quickly getting into position at the time). And I'm sure their parents wouldn't notice something like that, so there's really no slip-up here.