grow a tail

To grow a tail is a metaphor, as the anus where poop exits is adjacent to where a tail is placed. "Growing" in this case refers to partial expulsion as one attempts to prevent it.

• "When man needs to grow a tail, man must run to bathroom without fail. Thou shalt groweth thy tail with great care, or though might staineth thine underwear!"
• "Kathy is teasing Dad that Mom is growing a tail in the toilet. Guess he understands to a degree and had a strange look on his face when I came out, so assure him I am fine and did not grow a tail."
• "A steaming pile of toilet humour might not be everyone's cup of tea, but there's no denying the hilarity in some of these messages from beyond the bowl. Our readers managed to snap these delightful deuces before breaking the seal, splashing the pirate, building a log cabin, growing a tail... you get the idea."
• "The only other guy doing any work around here was the fat old cop down in the can, strugglin' to grow a tail."

• crown
• breaking the seal
• splashing the pirate