Is there any way you could implement a feature where I tell the system, "Hey, I want to be banned for the next week and a half," and it automatically bans me and won't let me access the site for that given time period?

I ask because it's finals week next week, and I went to the computer lab to study 2 and a half hours ago, but all I have done is print off my notes browse this site (and a few others).

Basically, I can't be expected to exercise any self-control, and damn it this needs to stop!