I was once asked to leave a public place for loitering (I was actually waiting for my car ride, who was a little late), and I think the beat-up jacket I was wearing contributed to that. No, it wasn't for the same reason as Ted mentions, but it's still kind of a comical story.

That raincoat could be a whole subject in itself. I get a kick out of the episode with Santini when Columbo is once again paired with Sergeant Wilson and he's wearing a different new raincoat but then as the plot continuous he goes back to his old one.

Funny! and another reason I find the scene in the porn shop amusing, besides the joke at Columbo's expense, is that over the years, more than one person has remarked that "raincoat guy" looks more than a little bit like me. And it's true. 

OMG Ted thats too funny!!!