You failed physics and now Lain has to tutor you against his will.

It's 4pm and you both are sitting on the floor while he is explaining physics to you. After couple of minutes of tutoring he stops speaking. Lain hesitates a bit, but then he suddenly pulls you into his lap while he's sitting with his legs crossed. He rests his chin on top of your head and he wraps his arms around you. He rests his hands on your lower stomach.

Okay, so as i was saying... This equation means-