I drink diet coke once per day, but it does not make me smile and laugh like that, but do enjoy it to keep my headaches away from being addicted to caffeine. Some drink 2-3 cups of coffee per day, but I prefer one diet coke to do the trick daily..

speaking of laughter, a young lady at work snorts like a pig when she laughs hard, now that I find amusing and I try not to laugh at her while she is doing that, but is funny..