SERIOUS OF PEOPLE SPEAKING STRAIGHT TO CAMERA
SLEAZY GUY
I'm a PC and I look up violent porn
CRYING HOUSE WIFE
I'm a PC and I blew the house keeping on Bingo websites.
VICIOUS LOOKING SCHOOL GIRL
I'm a PC and I bully weaker kids.
PASTEL SHIRT WEARING CREATIVE TYPE
I'm a Macintosh and I'm gay.
Hey Sooty I've never been an inspiration before.
*Simpers and looks pleased*
I like your harder take on this idea. Not sure about the punch though it's not terribly PC is it? 
My idea was just a play on words for the term PC with a protest at how annoying the bloody advert is.
Oh it's me going into the graveyard of old jokes with my shovel (beat) again.
This time digging up that old saw, that as Macs are used by creative types they're obviously all gay.
I had to fight Charlie Brooker off.