The Sneak and Cheat are part of the roll call of the Homestar Runner site. I have to be honest, i thought that the site was majorly stupid when i first started checking it out. Oddly, the more you get “in” on the self-referential in-jokes on the site the funnier it gets.
That and the dialog in my little corner of the cube farm frequently includes H*R-isms, Strong Bad one liners, and songlets. Check it out if you want to get lost in another geeky morass.