Be warned, deleting all cookies as per above, will also mean some of your regular sites will not recognise you.
Eg Answerbank. This means you will have to log in from scratch. So make sure you know all the details you will need to log back in - (username, the e-mail you used to register, passwords etc. etc.) - before you delete your cookies.
Perhaps there should be a;
Tools > Internet Options > Delete All Evidence of P*rn And And other Internet Filth Before The Missus Sees It
facility?