What rhetorical device is "she wears mink all day and fox all night" using?

What rhetorical device is the following statement using?

She wears mink all day and fox all night.

It's not a pun, it's not a syllepsis. Is there a word for false-puns of this sort?


Yes but it is a pun and a rather saucy one too.

The pun, also called paronomasia, is a form of word play which suggests two or more meanings...

I think it would be classified as a homophonic pun.