Operation Ouch!

Why Do We Wee? (3x5)

Air date: Dec 16, 2014

The doctors fill their bladders, quite literally, to show what happens when you go for a wee. Dr Chris meets a robot that can zap bad cells, and Dr Xand is in the Ouch-Mobile ready for more medical mysteries. Meanwhile, in accident and emergency, one patient has a sausage finger and another has swallowed a coin.