in film, a plot device that has no specific meaning or purpose other than to advance the story; any situation that motivates the action of a film either artificially or substantively.
Originally coined by Alfred Hitchcock, based on a story where this device was used in a story set on a Scottish train.
(sometimes called a McGuffin)
The suitcase in Pulp Fiction is a modern example of a MacGuffin.
Crazy. Madly deranged and completely nuts. Foolish; stupid or mentally imbalanced.
Common british slang for daft.
Someone should tell the building super that the daffy french woman has locked the fire escapes with padlocks again.