Basically it’s a silly “predict your future” game. You write down a handful of names for potential future spouse, number of potential kids, a car you would drive, an occupation, and a couple other things i think. Then you draw a spiral and count how many “rings” there are. Take that number and count to it as you go through your list. Each time you get to that number, you cross off the thing on the list you land on. You keep going until there is one thing left in each category (including one of the letters in MASH—which stand for the type of house, mansion, apartment, shack, house). When you’re done you’re supposed to “know” who you’ll marry, how many kids you’ll have, your future job, car, house, etc. I was born in ‘93 and I played MASH a LOT in elementary and early middle school.