King Kong in clingfilm
H20 is on the inside, and K9P is on the outside.
A lightbulb.
It's quite easy when you think about it. It's the inside of the hands, inside of the feet, the eyes, the teeth, the nails, and the owner.
A BMW's pricks are on the inside!
Hang upside down and make a noise like a banana.
So you can tell him apart from a gooseberry.