a dirty old man

dirty old man

An older man who is deliberately outspoken when it comes to sexual topics, to the point of making others uncomfortable. Bob is always making lewd comments to the younger women at work. He's such a dirty old man.
See also: dirty, man, old
Farlex Dictionary of Idioms. © 2022 Farlex, Inc, all rights reserved.

a ˌdirty old ˈman

(informal, disapproving) an older man who thinks too much about sex: Lots of dirty old men stood around looking at pornographic magazines.
See also: dirty, man, old
Farlex Partner Idioms Dictionary © Farlex 2017
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References in classic literature ?
"There's a dirty old man described in this book that is a little like me." He held up his French novel.
Surely I should be at home with my child singing songs about farmyard animals, not pretending to be in bed with a dirty old man?" the Daily Star quoted her as saying.
He doesn't mean any harm by it but I hate people thinking he's a dirty old man. Do I try to stop him as he's unaware that his compliments aren't always welcome?
Now it's hard to get the image of a dirty old man out of my mind.
Your father wasn't a dirty old man. He was lonely and must have missed the sexual intimacy he shared with his wife.
In one song we meet the angel by the empty tomb, and in another a dirty old man lusts after the twenty-something R&B singer Alicia Keys.
I also have a full head of hair but nine times out of ten, if I approach a woman, I am treated like a dirty old man.
Islander Alan Smith, 56, was branded a dirty old man after pinching two women on the bottom.
But what you refuse to appreciate is that to the young girls you apparently prefer you ARE a dirty old man.
She said: "Mr A's behaviour was as a result of a stroke he suffered, not because he is a dirty old man."