Man in the Moon (1960)
Blood: Mind you, don't misunderstand me. I'm all for the old fair sex. Nothing like them at the right time and the right place. I mean, let's face it, you boffins have never come up with anything better as a substitute. But the moment I catch a glimmer of the old red light, that's me, I'm off!
Blood: Married? Are you kidding? I wouldn't touch it. I've got my career to think about. The only reason I'm at the top of my profession is that I have absolute peace of mind. You're married though, aren't you?
J.B. Davidson: Well, yes, as a matter of fact.
Blood: I can always tell.
J.B. Davidson: How?
Blood: Well look at you. Toxic as a crow, sneezing like a maniac, cigarette ash all down your front, nervous, out of breath, you've got married man written across your forehead in big neon letters!
J.B. Davidson: But I'm happily married.
Blood: Ah, she's got you well trained.