octant - An octant is the number 18, like when you’re old enough to d

An octant is the number 18, like when you’re old enough to do stupid things and not get in trouble for it.

My brother said, 'I’m 18 now, so I can legally drink and fail at everything.'

My friend said, '18 is the magic number for being an adult and still being a disaster.'

My teacher said, '18 is the age where you’re old enough to mess up everything.'