Getting laughs out of computer games is nothing new, but there's a modification for Half Life 2 that has taken the entire idea to a ridiculous and magnificently absurd level. It's called Gary's Mod and it basically turns the entire Half Life engine into your playground.
You can do pretty much whatever you want. What's the evolution of all this development in software? Flying toilets, and people creating 10 second videos of 'the dickmonster'. Fuck yeah, Internet.
By the way, you aren't supposed to understand any of it. So don't try.