This is a great idea@...

The clever people at 'Sarcmark' have designed a new character, that is actually available to purchase (well done, money will be made), and add to your keyboard and phone. No longer will the excuse be made, "you just can't get the tone across" though I can't help but think they should have done an entire range, all the way from the 'I don't really care but i'm talking to you anyway' tone through to the 'I'm hiding it well but I'd really like to cut off open your scrotum and replace your testicles with stingy nettles' look. Money to be made there readers, just remember me when you make your first million...

(or can i just write 'not' at the end instead?)