Joining the history books along with Free Cone Day and whatever it is Taco Bell called the day they gave away those Doritos tacos, Chipotle will be selling pretty much everything on their menu for just $2 to anyone in costume on Halloween. They are calling it, of course, Boo-rito Day.
In previous years, the chain required patrons to dress as a burrito (see above) to get free stuff, but we're not convinced dressing as one as you eat one won't cause a space/time paradox. On top of the cheap grub, Chipotle will be donating all of the proceeds of the event to charity, so you can feel good as you stuff your face so much that you feel bad.
Alternatively, you can stay at home in your pajamas and cook some awesome Halloween grub for cheap, too.