Here are options you can try:

1) You can see our content on our mobile apps or view our sites on your phone.
2) You can use an anonymizer which will hide your IP address and allow you to visit websites that are blocked. Some free options are Hide My A**  and Online Anonymizer .
3) Subscribe to our RSS feeds.
4) Talk to your system admin to see why he/she would ever want to block cute kittens or funny memes and see if you can change your company or school's rule of blocking Cheezburger sites.