[For just a second, Leo forgets what he said before and thinks Huvrye is talking about Draxum, except ew, he definitely knows he's never referred to Draxum as his dad in front of Huvrye, because he doesn't care what Mikey says, that guy threw him off a roof.

And then he remembers, oh yeah. He made a joke about that.]

Oh, that's him. [He taps Splinter again.] So remember when I said I'm an escaped lab experiment? This guy here is my human DNA donor. And my dad.

The same guy that made me a turtle-human mutant made him a human-rat mutant.

[He chuckles, leaning back.] We're just a typical American family.