Cresstionable Behaviour

1. Wait for your friend to go on holiday for a week.
2. Find an unused keyboard and remove all the keys
3. Dress with cotton wool and replace the keys.
4. Pour cress seeds into the gaps between the keys. (An old credit card may come in handy).
5. Spray with water every morning and evening for one week
6. Wait for your friend to come back from holiday...