I was wrong.
I knew not what geek humor truly is, and my eternal thanks to zotmeister for setting me straight. This is what I should've linked to! There are 14 pages of them, and they keep getting funnier. If you've ever been to a con, played WoW, or heard the term THAC0, these will cause you to squirt fluids with glee.
(I can't believe I just said that.)