If that wasn't a dream and actually happened I'd imagine the other male students would be saying stuff like "that bastard" and "you lucky son a bitch" or "you're so gonna die" or something like those. Then after class the more violent ones would gang up on him and beat him to a pulp. This would all be done in a slipstick gag kind of way of course. Those scenarios happen sometimes in harem manga like in To Love-Ru
You woke up from dream where you dream another dream of where you dreaming about dream where you wake up from the dream of you dreaming about lewd stuff.