Give him a facial

You pull his head off your dick, and make him jerk you the rest of the way. He does it, looking disgusted, before you shoot your load all over his face. You saw a little even slip into his mouth.

"Oh, c'mon man!" He groans, wiping the cum from his lips. "That's disgusting!"

"Wear it!" You tell him, "You were late, and that's your punishment."

The kid groans again, before standing and sitting at his seat, you see a couple of his mates snigger at him, before returning to your lesson.