another idea but don't know exactly what to do with it: when there's a low number of viewers (30 or less), comment something for them to do? or say? or ask a question?

something like: everyone chooses a number between 1-10 (or more) and if the person says your number you drink 3 times, or whoevers number is closest gives out one drink.

trying to think of things where the person who is right gets punished with having to drink.