muggins

"Muggins" is a provision in many games, especially in England, where if a player fails to record an earned score, their opponent can claim that score by saying "muggins". This rule is commonly used in games like cribbage and dominoes.1

Cribbage is a card game typically played by two people, though variants exist for three or four players. The objective is to form scoring combinations, traditionally by moving pegs on a cribbage board. The game involves dealing cards, discarding some to form a "crib" for the dealer, and then playing cards to form combinations that score points. Points are awarded for making a count of 15, creating pairs, three or four of a kind, sequences (runs), and flushes. The game ends when a player reaches a predetermined score, usually 121 or 61 points.2