When you go to change a baby's diaper, thinking the baby pooped, but there's nothing in the diaper.
Oh, stink. Better change you. Whoops, Poopdini!
When you drop a huge ass duce, and you wipe your ass, but there's nothing on the toilet paper. (so you end up wiping at least 5 more times to make sure, cuz u don't want swamp ass)
It's like magic. You shot it out .... and then it's gone
*has poopdini*
Wow, must be my lucky day. I'm gonna play the lottery!