I've thought of this too and don't like the wasteful aspect of it. On the one hand things like chocolate and whipped cream, etc aren't really depriving someone of a nutrious meal, but it does still seem like a waste of money. One alternative is to stick to things that have already spoiled/expired (which has the extra "benefit" of making the dares even more gross in some instance
. Some other alternative non-food substances are obviously available like dirt/mud, paint, oil, glue, etc.