Percy is at Sally's house with Paul and Sally has gone to the supermarket

Percy: Paul do you know where the blue food colouring is?

Paul: In the second drawer. Why?

Percy: Just wanted to have some blue cake....*holds up a box of cake*

Paul: Oh.

After a couple of minutes Sally comes home to find Percy in the kitchen with a dark blue cake and light blue fingers, lips, teeth and mouth

Percy: Uh... do you think that I put too much food colouring?