Impede and Obscure

impede- to slow the progress of
obscure- (adj) relatively unknown; (v) to conceal or make indistinct

All the girls had a crush on Ian the Impediment. He was very hot. But we called him the Impediment because if you ever dated him, he always would distract you from your studies. It would take you all night to finish your homework becauae you were on the phone with him. He just became an impediment to your educational career. His view of what he wanted to do was kind of obscure so he was not very enthusiastic about his studies. Because he did not have a clear view of what he wanted to do, he did not care about what grades he got.