(n) - a commitment to live together between roomates, especially between twoplatonic individuals who engage in hints and undertones of sexual attraction without actually engaging in a romantic relationship.
I enjoy the flirting, so I'll stick with the roomationship for now, but who knows what may develop.
1) Food purchased solely to be used in a protest. One is 'crowned' with the (usually rotten) food. Hence the word coronation. Out of date quiche is readily available and can be thrown in an aero-dynamic way.
2) To spend other people's money on something that you want and they don't. In this case it's not the food that's rotten, but the source.
3) Rotten food.
For example: "He was supposed to buy the pizza, but he got us all salad instead. Tasted like Coronation Quiche".