Octogram
A shape that has eight sides and is so complicated it makes your brain feel like it's being stabbed with a ruler.
My math test had an octogram on it. I stared at it for 10 minutes. Then I cried.
My brother said his dream was to be an octogram. I said that's not a dream. That's a nightmare.
My teacher drew an octogram on the board. I drew a stick figure. He gave me a detention.