Brady (the man and the voice behind Numberphile) challenged me to do the Dice Bucket Challenge and, as he was pointing a camera towards me at the time, I agreed.

https://www.youtube.com/watch?v=HuKl3XuEmj4

Having felt the pain of a lack of water, I given £1 to WaterAid for every π dice that hit me. Please also join in and we'll hit the irrational goal.