Adjective used to describe something that is either (a) a substitution
that doesn't quite fit
or bill (b) something that is almost but not quite what it pretend
s to be.
From an old Australian TV ad. When you haven't quite got what you wanted or when you've got a second rate version.
Examples: Tori Spelling is a clayton's actress. Toowoomba is a clayton's city. American beer is clayton's alcohol.