Waikato cows caught munching on a marijuana plant

It's not often the police invite the public to partake in a little fun with marijuana.

But that's exactly what happened at the weekend, when the Waikato District Police posted a photo of a couple of cows getting stuck in to some 'grass'.

"While many of you think it's god's greatest gift to us, it is still illegal which means we still police it," the cops wrote.

"Rather than hitting you with stats and 'don't do drugs' comments, we thought we'd take a lighter approach and run a competition. Caption the photo below."