Overheard conversation...

Derek: I am a friend to animals and bugs.

Mitchell: Me too, that's why I'm not going to grow up to be a hunter. I'm going to be a firefighter.

Derek: I'm going to be a policeman.

Mitchell: I think you just want to be a policeman to get the guns.

Derek: Well, how about a dentist, does a -

Mitchell: Actually I'm going to be a veterinarian. They are like a doctor, but for animals. What are you going to be?

Derek: I'm going to be a spaceman.

Mitchell: Well there are no aliens, so you don't get a cosmic ray gun.

Derek: There is or is not aliens?

Mitchell: There is not aliens. All you do is drive around to different planets and plant a flag and say "I claim this planet for earth"

Derek: Is that all?

Mtichell: Pretty much.

Derek: Well I think I'll be a veteradarian with you.

Mitchell: Yeah, you can be my veterinarian assistant.

Derek: Do veteredarians really need assistants?

Mitchell: Yeah, you can fill the needle.

Derek: What about if you're not there?

Mtichell: Yeah, you could be my veterinarian back-up - like if I'm sick or taking a break.