The act in which four people form a square and perform oral on each other. Kind of like stacking lincoln logs but with humans.
Fred: Dude, how was that party last nite?

Jorge: IT was NUTS. Me, two chicks, and one of there boy friends 69 squared. It was crazy.
by Ginga-Ninja May 18, 2009
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It's like 69 buť in 4 people And they do it in one big square.
Girls in our class are such a sluts they even asked me if i want to do square 69 with them!
by Nightknight258 November 25, 2019
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