John McCainer Share definition Flag A person that eats dinner at 3 to 4 PM or "John McCain time", usually an older person. (Waiter) Oh, good, it's three o'clock; break time. Unfortunately I still have one John McCainer. John McCainer by Shikalika December 30, 2010 0 0 Get merch Get the John McCainer mug. Buy Now — $32.95 See more merch