Marijuana activists in Colorado are tackling old stoner stereotypes in a new ad blitz aimed at promoting moderation and the safe consumption of pot. To get their message across, they are skewering some of the old Drug War-era ads that focused on the fears of marijuana. And they’re warning tourists and first-timers about the potential to get sick from accidentally eating too much medical-grade pot. The Marijuana Policy Project plans on unveiling a billboard in Denver, showing a woman slumped in a hotel room with the tagline: “Don’t let a candy bar ruin your vacation.” The campaign is a direct response to the state’s post-legalization marijuana-education efforts. Activists say those ad campaigns rely on scare tactics or making fun of people who use marijuana.