Classless? Yes. Disrespectful? Yes.
Stink bombs?! Your fellow classmates couldn't think of anything more creative that stinkbombs? That is what you should be truly ashamed of.
Was there any sort of Q&A session? I would have at least let the man speak his piece, then blast him in the Q&A.
"Who is splendid among men, who is glorious among heroes?"
--excerpt from Gilgamesh