"Rock'em Sock'em tournaments at the local bar"
It costs 150 credits for a ticket to enter the tournament.
Three prizes can be won at the tournament:
a bag of wind (you lost, no prize)
A teddy bear (small prize) = 1 ticket,
Free beer for the night (medium prize) = 2 tickets,
or 3000 credits (big prize).
If you win the teddy bear, you automatically give it away to a beautiful girl who then gives you a ticket to enter the tournament again right away, giving you the chance to either win the big prize, or nothing at all.
If you win the free beer for the night, you give some beer at the bar whom in exchange gives you 2 tickets. You automatically enter the tournament 2 times in a row, with the chance of either winning a teddy bear or the big prize of 3000 credits.