Cactus has little pricks on the outside
You can tuna piano but you cannot piano a tuna.
A Dollar
Porcupines have pricks on the outside
The porcupine has the pricks on the outside.
A schoolbus full of children.
A cactus has the prick on the outside.
You cry because you shoved a cactus up your peckar.
Because he's a little prick!