Consuming alcoholic beverages in a group of 4 individuals, whilst seated in a square formation.
E.g Me: Hey mate, Tom, Kieran, and I are having a few beers, wanna come around for a Square John?

Mate: Of course, can’t say no to a Square John
by Kizdogga December 30, 2020
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A Square John is slang meaning a reliable trust worthy guy. The term originated from Bike Gangs and is common in the Canadian Prison system. It is considered to be a compliment if you are referred to as a Square John
He's cool man, don't worry he's a Square John.
by John-999 January 31, 2011
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