Here's a cheery reminder that, if you plan on heading to the city's colorful Castro to eat fun-size snickers and drop acid, Halloween in the city's gay district isn't happening. Once again, Halloween in the Castro has been cancelled. Yep. Do not show up. Got it? Good. Instead, you are urged to stay "Home for Halloween" this year. While we're at it, don't forget to get to bed at a reasonable hour, eat your vitamins, and floss after brushing.