To play this game you're given a situation, with the first dude making light of a situation starting with "Fortunately" while the next person makes the situation bad starting with "Unfortunately", then the cycle begins again
Ex.
Billy: Jimbo goes to the store
Johnny: Fortunately he has love with an employee in the storeroom
Henry: Unfortunately he gets AIDS
Fred: Fortunately thats his special interest
I'll start
You walk to work