Late 90s. Hardcore. European.

A sister works at a hotel and is fucking everyone. Her sister comes to work the season and isn't a slut...yet.
There's a son there who's obsessed with his mother--a silver dildo comes into play at some point.
In the end, the two sisters are equal slutty.
Ring any bells?
It might have been Hawaii, so actually American...
The silver dildo and the mother-son incest theme makes it stand out.

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