You lazy bitch!
You have nothing better to do than to study and make good grades. You should be ashamed of yourself. If I were your mom or dad, I'd take you over my knee and commence a whooping.
Your problem, as I see it, is that you have too many distractions. Television, internet, computer games, cellphones, et al. What you need to do is buckle down, straighten up, and fly right or the world will take a gigantic shit on you.