Why is Kevin the one to blame on the Christmas Pageant?
it was Buzz who started it and Kate was looking in shock. Kevin wouldn't have shove Buzz and send the whole pageant falling to the floor if he didn't started the prank.
So they are at home in the living room to talk about what happened at the pageant. there were two sides of the story. Buzz went first and confessed what he did was wrong. Kevin as suspicious he was took a moment to think what to say and Buzz goes up to him and whispered trout sniffer to him. It pissed him off that the whole family believed in his lies and gave a big "F.U" as he storms out of the room and goes to the attic