Hahaha! My uncle (the one who doesn't know his prime numbers) can't spell very well either!
He told me I spelled 'procrastinate' wrongly. I asked him how I had spelled it. He said 'cRas'. I told him it's correct. He said it's wrong. We then conferred with my grandmother and she said 'CRAS' is correct.

So for those of you who don't know how to spell that word, it's

PROCRASTINATE

not

procastinate or pocrastinate or procrastinat or pocastinate.......