The 4chan eats too much of my time

How do I keep myself away from it? Is there a way to block it in iptables and set it to unblock after four weeks with cron? Maybe some cryptowizardry I can't undo before then?

sudo vim /etc/hosts

>>1
I think the only way would be to configure your settings, set the root password to a random string you don't record, and then set a cron job to restore the old settings and reset the root password to the one you know. You should probably verify that your method for resetting the root password works before trying this...

Then use >>4 and don't learn how to use a proxy.