built a removable roof either a room or a car preferably in the back of a truck
when a bunch of people are sleeping in a room, open the roof very quietly. have atleast 50-100 bottles of coke and mentos ready and throw at those people sleeping.
the ones whose rockets (not direct throws, but exploded bottles) hit a person he/she recieves 5 points. and 10 points for a head landing (landing on a persons head)
Winner gets a giant coke free! and the one who got the most hit get's a mentos