Beware those San Francisco potlucks: A first-grade teacher has been charged with lacing food she brought to a party with marijuana, reports the San Francisco Chronicle. She apparently wasn't subtle with her secret ingredient because several who attended reported feeling the effects, and two went to the hospital feeling sick, reports NBC Bay Area. Teresa Badger, 47, was jailed yesterday and faces charges of poisoning. The employee potluck took place at a private residence, not at the school. It's not helping Badger's case that one person brought home leftovers that were eaten by a 15-year-old.