Back in the 50's my grandfather played a marble game with me called hull gull. I need the rules for this game if anyone has them. I know you put marbles in your hand and said "hull gull". The other person said "hand full" and then the other person said "how many?" and had to guess. I don't remember what happens next.
I found the answer on doubletongued.org: If guessing right, the guesser gets to keep all the marbles. If guessing wrong, the guesser owes marbles to the holder. I don't think I would have ever played that game. I'd be afraid of losing. :)