offer one can't refuse

Etymology
. A famous example is found in the film The Godfather (1972).

Noun

 * 1)  An offer from one side in a transaction with terms so attractive that the other side is almost guaranteed to accept.
 * 2)  A threatening offer by one party for which the results of failing to accept are so unattractive that the other party is almost compelled to accept.
 * 1)  A threatening offer by one party for which the results of failing to accept are so unattractive that the other party is almost compelled to accept.