I love consequences. It's where you each have a peice of paper in your group and you start of by writing a girls name, the you fold it over so the next person can't see and then pass it on and the next person say a boys name, then a place, then what he said, then what she said, and then the consequence.

e.g.

CK
and
Yumeh
in
A bouncy castle
Ck says: CAREFULL YUMEH YOU HAVE CLAWS!
Yumeh says: MEOW *bounce
Consequence: BANG!