Adoption - Everyone is Doing It

Tonight while I was cooking dinner Cal and Bucksquat were watching SpongeBob. Yes. Sponge Bob. Don't ask - we have free cable for a month.

Cal: I don't get it. How can a crab have a whale?
Bucksquat: Maybe he adopted.
Me: Who had a whale?
Cal: Mr. Crabs
Me: What?
Bucksquat: Mr. Crabs. His daughter is a whale but he's a crab
Me: Oh.
Cal: Yeah. I don't see how.
Bucksquat: Maybe adoption.
Cal Hmmn...
Me: Oh.

OK. I don't know which is stranger. The fact that they were discussing the genetic improbability of a crab birthing a whale, or that they found a way to explain it.