The anomaly wherein, upon purchasing or securing the last of an available snack or beverage, the item in question tastes better knowing that nobody else can have it. In turn, this often spawns jealousy, awe, or grudging respect.
"Man, I got the last soda from the vending machine. It's all mine, and it tastes AMAZING."
"Final Dew Phenomenon? I hate you and everything you love."