Weird Hair Day

I went to school today with a blue afro. It was kind of an aqua blue. When I took it off, the hair underneath was a bright pink, thanks to a spray can.

You know, the color spray says that it shampoos out. What they don't tell you is that it stays on your scalp. I've washed my hair three times and my head is still bright flourescent pink. How can I teach college with hot pink head?