Not quite dinner, but definitely past lunch.
"Omg, I haven't had lunch and it's 3 o'clock, I'm starving. I can't wait till dinner.... Who cares, let's get some dunch."
The meals of the day (England):
breakfast, around 8am
brunch, around 11:00am
lunch, around 13:00pm
supper, around 17:00pm
dinner, around 19:00pm