" Take a raincheck "
An offer that is declined now but may be reconsidered later.
I can't go bowling tonight, I've work to finish, but I'll take a raincheck for next time.
Where did it originate?:
, 19th century. A reference to the tickets given at rained-off sports games to allow the customer to return at a later date.
Where is it used?:
Hear the idiom spoken: