This is an hilarious game that can be played by the whole family - and the sillier it gets, the better!
Get everyone to sit in a circle. The first person should stand up and mime an activity - e.g. brushing their hair.
The person next to them should then get up and say "What are you doing?"
Rather than saying what they are actually doing they should say another activity e.g. "I'm eating a cake."
The person who asked the question must then mime eating a cake and the first person can sit down.
Keep the game going by rotating around the circle so that everyone has a couple of turns.