P1: Hold on, what is he doing here? (pointing at P3)
P2: Well, my car's in the shop, and P2 was nice enough to give me a ride.
P3: No, P2 was nice enough to call you a cab, but you wouldn't take it.
...and because that's still pretty cryptic, from another episode:
P3: We need to do something about Mom.
P2: I don't disagree, but there's an option to running away from her.
P3: Yeah, but we'd get caught, and you'd sell me out for a reduced sentence.