Crop circles are caused by stoned wallabies! At least some of the ones in Australia are. The natural question to ask is whether wallabies are aliens, but I think a better question is whether this will cause anti-drug campaigners to team up with PETA?
I wonder whether the wallabies flew to Britain and caused the jellyfish crop circle a few weeks ago? Nah. Probably not. Airport security would have noticed the opiates.