THIS IS SO MUCH FUN !!!

You will need:
  4-5 people that are somewhat funny.
                       
4 chairs
                 
A bunch of roles for the people to play

There's a bunch of different games to play as featured on "WHOSE LINE IS IT ANYWAY" but for your first improv adventure you should play

"Let's Make a Date" .  One person is a girl and the other 3 or 4 are bachellors who answer questions given by the girl as on the dating game.  questions like " Where would you take me on our first date?"
The best thing is the crazy roles the bachellors must play before the girl guesses who they are.

HERE ARE SOME ROLES THAT I THOUGHT OF WHICH HAVE TRIED WITH MY FRIENDS

A cow that really doesn't want to be milked
In love with the batchellor next to them
A Phycho killer begging to be let out of Jail
Completely Naked
A batty old man
A russian body Builder
A war general that fears defeat
Godzilla
an american that knows absolutely nothing about Canada
A dumb blonde
A stripper
A spanish man that comes on too strong
A man that cant stop sweating
A girl that has never shaved before
A rapper that can only talk in rap