Questions, answers and comments you make on Ask cannot be self deleted. The only items which are deleted are when moderators determine they are again guidelines. This is a good reminder to always be careful about what you say online, because what you say on the internet, stays on the internet.
Hi Blackswan.. Unfortunately you can't. I have seen mods remove questions when asked by the question asker if there's a specific reason. One girl asked about masturbation & her sister hacked her account. They took it off for her. Maybe you could ask them.