
Psychic bid (also psych) is a bid in contract bridge, grossly misstating the power and/or suit lengths of one's hand, used deliberately to confuse the opponents.
The Law of Total Tricks pertains to the card game of contract bridge, and is used to help determine how high to bid in a competitive auction. It is not really a law (because counterexamples are easy to find) but it describes a relationship that seems to exist somewhat regularly. Written by Jean-René Vernes for french players in the fifties as a rule of thumb, it was first described in English in a 1969 magazine article.
In contract bridge, coup is a generic name for various techniques in play, denoting a specific pattern in the lie and the play of cards.
There are various types of coup which can be effected.
There are many coups where the opponents can do little about:
Bath coup