If you've never played The Impossible Quiz, or its successor, The Impossible Quiz 2, then urine for a treat. I love little mind games and puns and such, and these quizzes are full of them. I think the Impossible Quiz 2 is better, so you should start with the first one. That way you'll enjoy it more. You have to think outside the box and sometimes nothing really makes sense at all. Both of them are pretty tough. Actually, I haven't even gotten to the end of either of them. Anyways, if you need a little break on your Friday, check them out.
Here's an example of one question: "How do you make Varnish disappear?" Think you know the answer? Prove it.
The Impossible Quiz
The Impossible Quiz 2