How do I remove old questions off of here?

There shouldn't be any point, first of all because you shouldn't have asked it in the first place; secondly, if you have asked an embarressing question then that is your own fault and you deserve to be punished by having it on cyberspace for ever; thirdly, if your question is a mistype of not understandable then people will not answer it anyway so you will not waste their time.

This person is and idiot and a unhappy person, this person probably is the type to post questions of others that should not be posted. Its nobody fault but the slanderers who are putting it out there just to bully them. So, how can you remove questions that are posted by others of slandering other people?