Because the camera adds 10 pounds.
Son: I don't know they haven't taught us how to read yet!
An etymologist knows.
They add another coat.
Because he doesn't have a brain
Nothing because ghosts don't exist. Edit:Holy crap I just realized I didn't post this on /r/antijokes.
Because chickens didn't exist yet.
A cam-el. Get it, because a camera records things and a camel is a animal.
Photos-in-the-seas!
About 10 pounds.