It's a ploy to make him look cool with the college crowd HB, who are you trying to BS. Them and the potheads!!
Of course the potheads are all going to assume he still does, and he's got much better pot and munchies, than they do, so it's questionable as to whether it will buy their vote. They'll probably just get stoned and think about going to vote, then get distracted when they go by McDonalds.