piddly dink
When you peel part of a banana down, and remove the fruit part of the banana. After removing said fruit part you take a dump in the vacant space of the peel, then sealing the peel making it look like it hasn't been touched. Now whoever should open this banana should say the word without even knowing it.
Kenny: Want a banana?
Bob: Sure KENNETH!
*Bob peels open banana peel/piddly dink*
Bob:AAAAAAAAH!!! It's A PIDDLY DINK!!!!!
Bob: Sure KENNETH!
*Bob peels open banana peel/piddly dink*
Bob:AAAAAAAAH!!! It's A PIDDLY DINK!!!!!