Good luck to him with his fundraising too, and hope you enjoy the smooth head and then the soft spiky regrowth :)
There's a few of us ostomates about. I've had mine since a little before I turned 18 and I always forget which terminology it really is (colostomy/ileostomy/other), but regardless of the term I use people seem to understand vaguely what it is at least, which is useful. Or they ask questions.