Quote from Niles in The Doctor is Out
Frasier: He's taking me to Madrid! Martin: You just met him last week, what's going on? He kissed you. Frasier: Well, he's a man of the theater, he kisses everyone. Well, it's not like he's the first gay friend I've ever had. Niles: It's the first one who thinks you're gay, too. Frasier: He does not think I'm gay. Niles: He thinks I'm gay, and I'm standing next to my pregnant wife.