A,B.

A: Hey, lets do that thing no...
B: Which?
A: That thing...
B: What thing?
A: The one we used to do together...
B: What are you talking about?
A: Come on! That thing ya...
B: I have no idea man...
A: Oh come on...
B: You come on! I told you I dont know...
A: Oh God!!!
B: What? What happened?
A: You really suck at this man...
B: At what? Suck at what?
A: At doing the thing man... Forget it...