We did something similar for my Hens night.
We just hung around at my friends house and got very, very drunk. It was so much fun though.
We did things like Twister etc, but also played some really funny games.
A really good one is trying to eat a block of chocolate with a plastic knife and fork. Almost impossible to get bits off and you had to wear some stupid mask at the time as well. Made for some very memorable photos :)
Oh, and a piece of chocolate on top of a flour pile where you can't use your hands - also a good one