Cue bid of opponents suit (Michael's Cue Bid) of a

1. minor: shows both major suits
2. major: shows the other major and a minor.

Responses by responder are:

1. if weak, responder will pick one of the suits or bid 2NT to find out the other minor
2. if strong responder can cue bid the opponent's suit, jump "raise", or bid 2NT to find out the other minor

Examples:

1. shows Hearts and Spades

1. shows Spades and a minor

1. wants to know which minor

The two-suit over-caller should be either weak (0-12) or strong (17+). With a weak hand, over-caller just passes or shows which minor (to 2NT re-bid). With a strong hand, over-caller makes an "odd" re-bid (like cue bid again). With 13-16 just bid the two suits.