Too late

Johnathan felt Max grab his cock with one hand as he used the other to pull down his underwear. Johnathan held back a moan at the warm feeling of Max's mouth wrapping around his tip and slowly descending down his shaft.

Max set to work bobbing up and down on Johnathan's prick as the helpless instructor tried wildly to stay calm. This was obviously something Max had practiced before.

Johnathan's face flushed bright red at the thought of his situation. Here we was, being felicitated in the middle of class, hidden only by his desk. At any moment he could be caught. The humiliation of the thought made Johnathan absentmindedly sink into his chair.

Max took the opportunity to pull his instructor's pants further down his legs, exposing him even more.