Doonesbury by Garry Trudeau for September 02, 1993
Mark: Gay? You're suggesting I'm gay? Andy: I merely raise the possibility. It's been years since you've gone out with a woman. Mark: There hasn't been time! I've been on a very demanding career track! Andy: Oh, hey, I've obviously upset you. I'm sorry, I'll be off. Mark: Okay, come on back. Andy: It's called denial. There are whole books about it.