Skin art

So my youngest son seems to hate sleep. It was after 2am when he fell to sleep last night. This morning, I found he has "decorated" himself.
I couldn't be too cross as he was practicing good writing and letter formation. He started school in September, so I think his writing is very good, all things considered!
It all washed off with a bit of scrubbing from a flannel and a nice warm bubble bath.
I wonder what his next art attempt will be?