What if you were pregnant like a spaceship?

Rigby was thinking about a friend of ours who is pregnant, than said:

"What if you had a person inside you that was big, like a Mommy!  And then they went like a spaceship!"

Huh?

Then he bent over, making a large ball with his body, and began counting backwards from ten (like a spaceship countdown) while attempting to shrink.

"And then they're born as just a baby.  Wahhh, waaaah!"

Oh, the places his mind goes!