Muggins

Noun

1. A fool or idiot .

   "I suppose muggins here will have to do all the work, as usual."

2. The act of stealing another player's points because they either mispegged or counted up incorrectly.
3. A game of dominoes in which the object is to make the sum of the two ends of the line some multiple of five.
4. A card game based on building in suits or matching exposed cards, the object being to get rid of one's cards.