Picture the scene: you're out walking your dog one evening just before bedtime, when you suddenly hear a rather violent-sounding thrashing coming from somewhere.

Upon closer inspection, it seems to be coming from the boot of a car that's parked on the road you're walking down. In fact, it sounds like someone is trapped in there and by the sound of it, they really want to get out.

That's exactly the scenario that Joe Craig found himself in the other night when walking around East Finchley in London with his dog Harpo (that's them, above).

The English children's author told his story on Twitter, and let's just say it had quite an... unexpected ending.

Read on below (and let the 'dogging' jokes begin...)