The observed phenomenon that the shit cycles of men who coexist together (such as in prisons, convents, bordellos, dormitories, etc.) will tend to become synchronized over time.
Guy 1: I gotta take a shit.
Guy 2: Whatever, dude - you know the boss is gonna follow you right in, right?
Guy 1: Yeah, fecal synchrony is a bitch.
by PositiveZero March 6, 2007
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