Who is responsible for making crop circles?

Do you give up?

I'll give you a hint. Aliens are not making the crop circles.

Still don't know. Ok, I'll give it to you.

Answer: stoned wallabies

According to the BBC, Australian wallabies are munching a ton of opium poppies, getting high as a kite and hopping around in eerie patterns.

Wallabies love opium. Australia produces about 50% of the worlds legal opium supply used to make morphine. The Australian poppy growers are having a hard time with the wallabies, who break into the fields...get high...and hop hop hop in circles.
Sheep have been seen also munching the poppies and wandering in circles.