What is a "mulligan"
A golf mulligan is basically having a do over on a shot, in normal situations all the players in the group agree on the number of mulligans a player gets per round or per side aka per 9 holes.
Usually, the agreement is the person playing a mulligan is not penalized.
Let’s say you shank a shot off the tee, simply drop a new ball and play it rather than chasing down the shank.
A lot of charity and fund-raising tournaments allow players to purchase mulligans as a way to raise money for the charity in question.
You never see mulligans in any official amateur or professional match or tournament.
A mulligan is cheating unless your group has decided you can have a do over shot. Bill Clinton was infamous for taking mulligans.
A mulligan is just a do-over, typically limited to once a round. Many charity tournaments let you buy ‘mulligans’, so when you put a ball in the water you can get a do-over. The pros DO NOT do this. Play it as it lies.
I do not know the origin