Lunchness

n. a state of wellbeing, usually characterised by positive emotions, ranging from contentment to euphoria. The feeling usually occurs during or after a much-needed midday meal with friends.
interj. Used to express anticipation of the euphoria to follow.

n. ah, that cheeseburger was good. So much lunchness.. :)

n. last summer I had so much lunchness in my life.

interj. A: Let's go to that new restaurant on the corner.

B: Oh lunchness, yes!