Get into a circle. One person goes into centre and starts to mime a simple activity. Once the activity is established someone from the circle jumps in and asks: “What are you doing?” The player doing the mime responds with some activity other than the one they're doing. If they are in Cobra Pose they might say, "I'm fishing". The player that asked the question starts the activity that was answered (e.g. fishing) and waits to be asked what they're doing. Continue until all have tried the exercise.
Say "what are you doing" in different accents or moods.