For some reason, Ron was having an off day. He was dizzy & out-of-it with no real explaination. Unfortunately, that day he also needed to practice attack & defense spells. Naturally, he chose Harry as a partner.

"You go first. I can't remember what we're doing." Ron tried to laugh, but instead nearly dropped his wand, looking very confused.

Harry took out his wand. "Alright, try & attack me." Harry told him, pointing his wand defensively @ Ron.

Ron took out his wand again & pointed it @ Harry. Harry raised his wand, whipped it down & was just about to say a jinx, when Ron swished his wand & said "Avada Kedavra!" Ron immediately stopped in his tracks & stared as Harry fell to the ground.

"I am royally boned."