Stoners may be one of Taco Bell's target audiences.
"When your target audience is stoners, it stands to reason that you'd throw a few stoners in your ad campaign"
http://www.brandfreak.com/2010/08/taco-bells-superheroes-aim-to-do-battle-with-the-munchies.html
"Taco Bell sure knows their target demographic, stoners. Post some epic stoner food here."
http://www.joinsg.net/topic/46818-ultimate-stoner-munchies/