"What is a MacGuffin?" asked Sid.
"Anything you want," answered Arthur. "The definition of a MacGuffin is, 'a plot device in the form of some goal, desired object, or other motivator that the protagonist pursues, often with little or no narrative explanation as to why it is considered so important.'"
"So something that is non important like you?"
"I didn't say it was non important. Only that you don't know why it's so important."
"It sounds a bit like a substitute swear word doesn't it?"
"It also sounds like a McDonut's meal of some kind." Sid looked around, "So where is this MacGuffin that the story is about?"
"Maybe the MacGuffin is the MacGuffin?"
"I think you're a chuffin MacGuffin."
Just then a stuffed puffin fell from the ceiling of precinct 12, "Lookie that," lookied Sid, "A chuffin puffin MacGuffin!"
(Do you think I could work a toasted muffin in there somewhere? I wondered, but nobody took me up on it.)