Knock Knock

Cody: Can Arnold come and play?

Biped Girl: I'm sorry but Arnold's napping

Duffy: Couldn't you wake him - I'm sure he wants to have a run around the neighborhood

Biped Girl: You know, I don't think that's a good idea...

Cody: Our bipeds let us!

Biped Girl: Maybe next time...  I think they're calling you...

Cody & Duffy:Bye Arns, see ya around

Moments later, around the corner...

Cody: Poor Arnold, he never gets to run around with us

Duffy: Yeah, his bipeds don't let him tear around the neighborhood, chasing cats like ours do...

Cody: Hey, you know, we're the only dogs who actually tear around the neighbor... 

Duffy: Watch out Cody, that car just missed you...