When you are having a bowel movement and you feel, smell and hear the turd come out, but after wiping and turning around to flush, there is no turd in sight, as if it has vanished into thin smelly air. Syn. Ghost Turd.
I took a big fat dump and when I went to flush all I saw were turd tracks and toilet paper. That sewer pickle was a real Poo-dini.
by jaywillgonzo January 23, 2010
The act of pooing in the back part of the toilet. Aka upper deck. Poo water, not clean water, will then refill the bowl when someone flushes. There is high plausible deniability and accusing someone of doing it is alsmost more awkward than poo-dini itself. Can be used to wreck homes, lives, and businesses.
by Steppin' Razor April 09, 2009
When a poo's Velocity is so great, it falls into the toilet and slips around the piping of the toilet and disappears. After finishing, and before flushing the toilet you realize the poo has vanished et voila! It's done a poo-dini!
Rob "hey man how was your poo?"
Steve "I dunno man, By the time I looked, it was gone, it did a poo-dini on me!"
Rob "Spewin'!, bet it was a good one..."
Steve "I dunno man, By the time I looked, it was gone, it did a poo-dini on me!"
Rob "Spewin'!, bet it was a good one..."
by Where did my poo go October 24, 2011