[His eyes widen slightly, and he quickly pulls out his battered phone to look at the time, and — yup, yeah, it's passed 4:00. His jaw almost drops, and he looks around like he's checking for a way to turn back time. This is so embarrassing—]

I'm was not just passed out! I was resting my eyes. Totally different. [He almost panics at the thought of having a bruise on his forehead — but then he remembers no, wait, that was yesterday, that bump's gone now.] I didn't realize it was so late, that's all. Y'know how teenagers are — we're, we're bad at keeping times straight. But I'm still getting decent grades in school! I aced a test today and everything.

... You ever read the Alien Odyssey? It's pretty nifty.