Now I just LOVE Doctor Who. If you do not know what Doctor Who is, you should be ashamed. Any way, it is about a dude who travels in time with his TARDIS. The Tardis is an old fashioned British blue police box which is bigger on the inside than the outside.
The dude is called The Doctor. He looks human, he sounds human, yet he is an alien. He can change his body but he is still one person. This is The Doctor.
Here's a picture I drew recently. This was inspired by something that happened at school a few days ago. Luckily I wasn't the kid with my pants down and I'm not the kid laughing either. Still, life happens.