A P. Because it's like an ARR, but it's missing a leg.
If you break a leg, you get cast
They have no legs to pull!
She took the 33 bus twice instead.
It was missing a tire.
Take the P out of him.
They're not infallible
Youd think itd be rrrrr but tis the sea.
Arr! It's driving me nuts!
The pirate replies: "Arr, it's been driving me nuts"