Unfortunately, no. I guess GAG doesn't allow it for whatever reason, maybe to protect site content? Not sure. Best you could do is disavow, switch to anonymous if you don't want your name on it, and if it's something with pics of yourself you want gone, then delete the source of the pic.
Once you ask a question, you're doomed. You can't delete it. You can only set the anonymous option and disavow opinions.
Once it's out there, it's out there for good. Google is in connection with it. That's how most of us found the site. We asked something on Google and found it through that. The only way to truly get it removed is to contact Google but, then you're giving up your anonymity, and well, you won't be doing that, since you even went anonymous for this shitty question