Wow, I played this with one of my smart-classes, and they DIED with laughter and all participated with equal eagerness.
I must confess it doesn't have much educational value, but they LOVED it.
I called 6 kids to the front of the class, in a row. I explained to them that I would write a scenario on a card and show it only to player #1. Player #1 would then act it out to PLayer #2, while all others faces the board. As soon as he was done acting, player #2 would turn around player #3 and act for him. Repeat until they're finished. By the time it got to player #4, they were always lost and NO idea what was going, they were just doing their best to immitate the actions...but because they were confused, they always left out parts. The watching students found it HILARIOUS.
Of course, you have to be creative and come up with extremely random situations to make it that added level of funny. My Unit was "Leisure Activities", so I had scenarios like:
1) You're playing computer-games and REALLY have to pee, but can't pause the game.
2) You're at the theatre with a girl, and lean in to kiss her, but she slaps you!
3) You're playing soccer, and the ball sacks you! (I drew a stick-man being sacked by a soccer ball beside, to explain that term)
It's best to personally choose who will be the first actor - just cos you can choose the smartest kid of the group, who will definitely understand your scenario.
After player #6 had finished watching the now-very-lamely-acted-scenario, I would ask him "do you know what just happened?" Always no. So I would go backwards, asking each student if they knew what happened. Usually student #4 would get part of it (eg: "I playing computer game") so I'll probe "And...?" ("And...I pee on computer?")which would make everyone laugh.
Then I ask the watchers - do YOU know what happened? (since they didn't see the card either)
The players can then choose the victims for the next round.