You know you had to think about it.
Sometimes it's the only sporting event on. See also Basketball.
...or seafood paella. This will strike you as even more hilarious if you've actually done it. See also Alcohol.
Kind sir, might you lend a hand and add a funny thing to do?
Quite possibly the most pointless, yet funniest and most randomest thing to ever do. See also Hair.
Up and down.
See also Old-Timey.