For many, cruising around suburban streets to see the delights of neighbours' Christmas lights is a family affair.

But one house in Adelaide's southern suburbs has created a display that is a little more x-rated than most.

See the display in the video above

The naughty Noël decoration was spotted by Instagram user Stacey Sanders on Sunday night.

"Only in Morphett Vale... bring in the kiddies," she wrote.

The x-rated display turned heads at Morphett Vale. Credit: Stacey Sanders / Instagram

Although probably not one for the kids, Morphett Vale features plenty of other, family-friendly displays.

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A spectacular show on Emerson Drive prompted a cheeky response from a not-so well decorated neighbour.

"Ditto," the second set of lights reads.

See the hilarious lights in the video below

A spectacular show on Emerson Drive prompted a cheeky response from a not-so well decorated neighbour.

Bad behaviour

One of the city's most iconic displays, the West End Brewery Christmas Lights, was subject to bad behaviour of a different kind over the weekend.

Police are investigating after two young men broke into the Riverbank Christmas Display at Thebarton.Their antics were caught on camera, leaving visitors at the popular festive site furious.

Watch the video below: Not-so silent night at the Riverbank Christmas display