Attempt to confuse the next doodler; draw some crazy stuff that they can't describe, but put some effort in (don't draw random lines :P).

The man with the longest arm in the world is roommates with a green alien with the longest neck and a cat with the longest tail.

Three different colored men with very long necks

You expect the transformation potion to horrify men in black. Yet these want to become giant coloured hats. The blue one particularly.

The Blues Bros are inquisitive about a substance that turns you into a sentient, technicolor top hat.

The evolution from man to fancy rainbow top hat.

This man is going through multiple surgeries to slowly fulfill his dream of becoming a rainbow colored top hat.

It's arguable whether or not a hat to cover up that face will be an asset... but whatever's going on, you probably don't want to be next.

The mad hatter from that movie