I once drew something similar. It included me totally not lying about focusing on studying instead of some scientific stuff (Rule 110, to be exact), Pinkie Pie asking whatever or not I can Pinkie Promise that, Twilight telling me how I shouldn't ignore studying for it's important and Rainbow Dash confirming, that studying is indeed important...for eggheads.
Man, maybe I should scan that one, too! Now where it is? *quick search* Can't find it, but luckily I have this one comic where I was riding a shopping cart and then Twilight...oh wait, that's already on dA.