This is the first thing that pulled up when I googled it...FWIW...it does say "Urban" so meanings may have evolved unbeknownst to someMy son and I often use the ‘ get your shine box’ phrase often.
With our best mafioso voice. Still get laughs even though our wives have become numb to any Goodfella, Scarface, Godfather references.
“What’s this have to do with the tweet “ from the stay on topic Antifa starts in 3…2..1
get your shine box - Urban Dictionary
1: A way of putting someone in their place · 2: Telling someone to go **** themselves · 3: Another way of saying "**** You" without saying "**** You"