A childhood belief about general

I use to believe, when i was 5, that if you laugh too much you had to drink orange juice or you would die (because my sister told me). Then one night my sister and I were laughing a lot because we kept on saying 'poo'. Then I remember what she told me and i went to drink some orange juice but we didn't have any. I almost cried. So i called my mum to ask where the oranges and the juicer was. She told me, then i made orange juice to drink and drank it. My sister just laughed at me.