Crying over (spilled) milk

My sister easily has half an inch on me, and I think it's due in part to milk. Growing up my parents forced us to drink a glass of milk every night. My sister and I would stare at those glasses hoping that they would topple over, and when they did, which wasn't often enough, we would cry, blaming the other for the soggy mess. I swear my sister used her "older sister powers" to make the milk spill. The Flintstones vitamins incident, on the other hand, well, it's debatable who's the mastermind behind that one.