Question about something that Michael said
Michael is talking to Cameron about Bogey's party. He holds the flyer for the party and it morphs into "Free beer" and they throw them off the top floor.
Before doing that, Michael says, "And now for a little payback...."
Why did Michael want to get back at Bogey? I seemed to have missed why he'd want to ruin Bogey's party. Because Bogey didn't let him join their future MBA club?