Grow a Tail 

to take a shit, just to plain ol' take a shit

Dude, hold that thought. I gotta go grow a tail

Grow a Tail by stefanali pops September 26, 2005

Grow a tail 

to poop, or take a shit.

i had to run to the bathroom to grow a tail.

Grow a tail by Squirt95 August 22, 2008

grow a tail 

defecate

Nah, that's cool; I'm going to sit out this round; I gotta go grow a tail.

grow a tail by William Sherman July 15, 2002

Grow a tail 

To defecate. Equivalent to “take a dump” or “take a shit”.

I took too many laxatives, I need to grow a tail before I go.

Grow a tail by Average_tail_grower October 14, 2021

grow a tail 

To simulate a kangaroo, or other large marsupial, by bending over and releasing a long blind baby seal from your cake hole.

(At the end of a large dinner).
"Where are you going with that magazine, Edward?"
"I'm off to meditate and grow a tail"

grow a tail by Ted May 7, 2003