Ryo-Ohki and Sammy in “New Technology”

There's a stairway over here. Let's go.

Sure, Ryo.

"Ryo"? What gives? You always call me "Ryo-Ohki".

Uh, it's nothing! (laughs sarcastically) It just didn't feel right, that's all.

Snap to it, Sammy! There could be enemies nearby. (Sammy slaps him) Hey, what are you hitting me for?!

Because! Just because!

I don't get it...