Mahjong came to the West in the 1920's and has come in and out of vogue as a recreational activity. The game played in the Western world is a modernized version compared to its original form. Recently Mahjong has been enjoying a comeback due in large part to its online version and its casino form.

That term is why some refer to folding a hand as mucking your hand  or mucking your cards.  You can also verbally announce fold,  which is a binding comment, and then throw your cards into the muck.

Omaha is a variant of Texas Hold'em Poker. Omaha is considered, by some, to be the hardest game of Poker to master. Of all of the different games of Poker, Omaha is for many the hardest to learn to play and the hardest to bluff in. It is played most often at fixed limits, like Texas Hold'em and pot limit.