Everyone except @tool can play. It's the people who weigh under 160 lbs (72.5kg) versus the people who weigh over 160 lbs. Aim of the game is to name a user along with the nickname that Tool calls them. But you can't use your own nickname. Identify yourself as either under or over 160 lbs and then take it in turns. So, if a fatty gives an answer then a skinny has to answer the next one and visa-versa.