The Boys Teach Me The “Two Man” Term

Ok ok I love sports! I make as many games over at my neighbor’s house as I can, but I miss things. He’s filling me in on the recent sports gossip and I’m soaking in the game… well, him and his hott friend he has over. Then I’m lost, two-man, what is two-man? I don’t know if I’ve really heard that as a term. Maybe they can man-splain it to me in a way this Lady can understand?