A bloke brings a bird back to a shag, before doing this he tips his mates off and gives them a key to the room where he plans to take her. All his mates hide in the room in various places such as wardrobes, behind curtains and in cupboards etc. everyone stays deadly silent when the couple enter the room, the couple begin sex (preferably doggy) then all the blokes jump out and shout buckaroo! the aim of the game is to see how long the bloke can stay on for before the girl freaks out. jumping out naked is not approved as it can be misconstrued as attempted gang rape!
this can be achieved by whispering something in the girl's ear. a popular one would be "i've got aids", wait for the response but hold on tight and see how long it takes for you to buck, buck, buckaroo!
The aroo part happens once the sleeper wakes up (sometimes jumps up due to a shock), and finds the objects on them,which is then followed by laughter and or taking the piss (for a looong time) by the other members of the group.
Remember-the more things on the sleeper, the better and funnier the Buckaroo....:-/
2. People put stuff on sam before he wakes up
3. Sam wakes up with stuff on him, ie lightbulbs, smelly socks, mouldy cheese etc
4. Others laugh, shout BUckaroo and or "you got buckaroo'd" and take the piss for months to come
5.sam feels stupid