EDIT: This freebie from February 2014 (and beyond) is still active!
Every year I tell my brothers these free Emergen-C vitamin drink “supplements” are bull. Yet they always end up in our supply bag whenever we go camping and every morning I end up drinking one. They taste ridiculous, I swear to everyone within earshot they don't work, and yet I drink one every single morning. It's like a ritual at this point.