Oopsy daisy! One of the most explicitly sexy trailers to ever grace our cinema screens has been accidentally shown to kids waiting for cutesy Disney flick Frozen.

Chances are you'll have already have guess that the trailer is of course for arty sex flick Nymphomaniac, directed by perpetual risk taker and boundary-breaker Lars von Trier.

The unfortunate but just so slightly amusing incident occurred in Tampa, Florida and The Guardian report that parents rushed to cover their innocent angels' eyes and ears or ran out of the place when the trailer unexpectedly popped up on screen. Sure what else could they do though? Give the childers an impromptu and very confusing lesson about the birds and the bees?

Speaking to My Fox Tampa Bay, a grandmother who witnessed the horrific scene said, 'It seemed like forever when you're trying to, you know, cover a little guy's eyes. I didn't have enough hands to cover his ears too and he got the sound down real good.'

We're not quite sure what getting the sound down real good means but we're guessing she didn't mean it was a positive experience for her little cherub.

Nymphomaniac stars Charlotte Gainsbourg, Shia LaBeouf, Christian Slater, Uma Thurman and will open in Copenhagen on Christmas Day.