Yes, that's right -- adjective. I was browsing in my favourite section of Mac's when I "stumbled" across this oddity: rubber-chicken.
It's used to describe speaking engagements at luncheons or conference rooms referred to as a rubber-chicken circuit.
Interesting, eh? I would not want my speaking engagements -- if I had any -- to be known as a rubber-chicken circuits.
Not a favourite, but thought I'd throw it in the soup.