Depends on how badly you behaved. If you splewed racial epithets, say bye bye to your account now. If its just a minor flare up with the usual F-Us and stuff, maybe a couple of days suspension.

Try not to lose your cool online - don't let some mentally-challenged jerk get you kicked off the account you spent years building. With so many millions of accounts Blizzard would not hesitate to kick people who infract on their Terms of Service.

My wall next to my workstation has lots of marks from my fists which helps as a release of rage. It helped - zero warnings in 2 years of gameplay and I consider myself a pretty hot tempered guy (as my mouse and keyboard can testify). I've mellowed a bit with age though

Break your keyboard - easier to replace than your account.

This is my 3rd keyboard I am on since I started WOW in Dec 2004. I blame PVP - it really makes you mad like nothing else, especially if you do not play an overpowered class.