Big calves

When someone is so smart, that they show possible symptoms of Autism. They must have extra brains in their calves.

You know the birth dates of every Avenger? You must have big calves.

What ya say?

Hey, what are you up to friend?

*Incoming Call from Person B*

Person A: "Hello?"

Person B: "What ya say?"

Person A: "Nothing much comrade, what you up to?"