Everyone sits in a circle. Each person has bits of scrap paper.
Everyone writes a sentence on his or her paper. For example, "I love ice cream" or "I wish for world peace". Then everyone passes the paper to his or her right and receives the paper from his or her left.
Now everyone turns over the bit of scrap paper they've just received, and attempts to illustrate (very simply--in 1 minute or less) the sentence they were handed. They then pass this to their right.
WITHOUT LOOKING AT THE REVERSE SIDE, each person then starts a new piece of paper and writes down what they think the drawing they just received depicts. They then pass this and the paper they received along to the right. When everyone has a stack roughly corresponding to how many people are playing, everyone examines how their original statement has been corrupted by interpretation.
It's like Telephone but with an extra step where you make silly drawings!