In the Jurassic Age of porn, anal sex may have been considered perverted, but
that concept has gone the way of the Dodo. There's nothing particularly controversial going on here.
If generic Euro-sex such as this has one thing to offer, it's bored sluts who open that Chunnel hatch to any uncut piece of meat that knocks on the back door.
Perverts adds to its laundry list of gape-associated encounters a bit of threesome action and minor spanking/paddling.