Two Up is a traditional Australian gambling game.  

Two pennies are tossed in the air.  Players can bet on Heads or Tails.  The Tails side has a white cross painted on it.  If two sides of the pennies come up the same, then it is a result. If there is one Head and one Tail, then the pennies are thrown again.  The spinner always spins for heads and if they 'head 'em' they can spin again.

The other players can bet amongst themselves.  If a player calls '50 Heads' and somebody says 'Betcha' then it's a bet.  The Tail Better holds the money, in this case $100 under his foot.