Valleywag has a great idea - use Google Code Search to find dirty code. Personally, I like the results for 'bollocks'. I mean, a Perl module calld Dev::Bollocks. And lots of code from Gentoo has bollocks in the source. I also managed to find this. Note, it's some very saucy C. 

Spin, spin and so much spin that the semen comes flying out the teenager's a-hole. 

I'm in the process of retraining myself to use PHP5. There's not much to learn. One of the nice things that PHP5 has is massively improved XML functions - and Drew McLellan has written a great library called hKit. I want to be able to read hReview format - and this looks like it could do so quite nicely.