The chillest shape of all. Chiliagon has 1,000 sides and can be mistaken for a circle. It's one of the biggest shapes that actually has a name, and that's logical. I also probably wouldn't want to name a shape with 6,454,740 sides.
6 year old Timmy: look mom, i drew a chiliagon!
Timmy's mom: what the hell is a chiliagon
when you're holding up your phone and making faces at it, as though you are taking a selfie, but you're really taking a picture of the person across from you or the wall or anything else that seems interesting but you don't want to be caught dead taking a picture of.
This action is often made more convincing by wiggling the eyebrows or opening the mouth, to pretend you're trying to get a Snapchat filter to work.
FRIEND A: "Did you just take a stealthie of me?"
FRIEND B (turning phone around): "no I was just using snapchat's new filter, see?"