Spin the bottle is a popular party game for teenagers, but can also be played by adults that want to bring back some memories of their first kiss... or are really drunk.
The basic premise of the game is really simple. Everyone sits in a circle and one person starts by spinning the bottle in the middle of the circle. He/she than has to kiss whoever the bottle points to.
It's as simple as that! If you don't want any same sex action, I suggest you agree before-hand that re-spinning is allowed in this case.