The creative descriptions never stop:

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Listed as having a “French Kissing Insert.”

 
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wtf? I have no idea what that means 👎
I’m right there with you, but I’d guess it’s a different take to the “kissing 40” insert where part of the “4” touches the “0” ?
 
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Maybe the owner is French as it is clearly a "kissing 40" bezel insert which are quite rare and valuable.
See image for comparison to other inserts without the "french kissing insert".
 
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wtf? I have no idea what that means 👎

It's a bezel insert whose beauty can only be fully appreciated through licking. 😁
 
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I'm pretty sure the names are meant for nothing more then fun and marketing. From the About section of the website:

"I hope you will be entertained with the hyper-accurate, detailed photos on vibrant backgrounds, and the technical information presented with a little bit of spice, like the nicknames given to some of the watches."
 
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Jacek just having a bit of fun and attracting some attention to his listings.
And it worked.