'It Was Mame, Mom' - Season 2, Episode 18
Charlie is invited to a party hosted by a gay ad-executive named Eric, so Charlie asks Alan to pretend that he's his life partner, but then meets Eric's gorgeous ex-wife.
Air Date: March 6th 2005.
Alan: Did you ever try [Viagra]?
Charlie: Once or twice. Out of curiosity, not necessity.
Alan: What did you think?
Charlie: Not my thing. Like cork in the bat. You?
Alan: Yeah, that's what my ex-wife wanted—more sex with me that lasted longer!
Evelyn: You're here, you're queer. I'm used to it.