When your cornrows have a bald spot.
"Snoop Dogg had to change his hairstyle so he wouldn't start getting a Crop Circle."
When a group of mates gather in a circle each facing the same way around the circle, front to back, drop down to a crouch, and shove an ecstasy tablet up the arse of the person in front. Then when all the pills are shelved, turn into the middle of the circle, touch fingers and say "E.T. Phone Home!"
"Me and Lockie had some mates around last night for a Port Lincoln Crop Circle. It was pretty Loose ay"
The pattern left on a lawn after a dead project car is resurrected or sold. Normally dirt in the middle with longer grass around the outside where the mower can’t reach.
“Did you see the Bogan Crop Circle on Neil’s lawn? Looks like he sold the piece of shit."