I'm not good at comedy, so here goes:
First guy saw Mrs. Avery and called Ecolin for her. Mrs. Avery is concerned about the strange man, and he reassured her that he's a friend. She continues to launch her worries at her until he decides to just walk away. The man blows his smoke at her (probably to piss her off) before following Ecolin outside.
Outside, the man asks Ecolin regarding the whole 'friend' thing, and he shushes him, saying it was the only excuse he could think of. They proceed to talk about...stuffs.