You're so smart, son!

Bulls don't produce milk?

... Their body is different from cows, so they don't make milk.

But why did he say he'll give me some in the end?

Umm... That's because...

That's not edible so you shouldn't drink it.

If it's not edible then what's it for?

... for industrial production.

What do you produce??

...babies?

Wow, my son really knows everything!!