I know what Boxing Day is, well, sort of. Don't know about the lunch part. Non-Christians who celebrate Christmas.
I used to celebrate Chrismas till last year when it was first year for me without both parents - Boxing Day Lunch for my whole life (day after Chritsmas Day) always been cold meats, mashed potatoes(hot) and cold pickles with bread and butter - we were never a 'religious' family. Love of our 'pets'.
Don't ya mean love of our "kids"? lol My babies would be the only thing I'd grab if our home would be on fire. Everything else is just stuff. Watching your house burn and waiting to call the fire department because your house is worth more dead than alive.
Used to love them as a kid. Now, not so much. "Instant Hippies", "Instant Bikers", etc. Bunch of posers or people finally letting themselves BE who they really are?