Precautionary poo Share definition Flag The kinda dump you have before going out for a meal, or a night out on the lash etc Brb man, gotta go for a precautionary poo, don't wanna be turtlin' all night! Precautionary poo by M_R_B May 9, 2009 0 0 Get merch Get the Precautionary poo mug. Buy Now — $32.95 See more merch