Because it's easier to deal with just one prick
A hematologist pricks fingers.
The pricks are in the inside of the Porsche.
Pure-eh
She was trying to get ahead!
I don't have a new BMW in my garage.
A porcupine has the pricks on the outside.
They're used to dealing with ripostes.
He responds, "One note at a time."
A transplant.
A cactus has all the pricks on the outside.