The interesting thing is that the roast will be etched in his mind for a long time. His ego and the truth will clash, provoking a cognitive disonance that will last long.

If this is true, he will probably transition from ignoring the thing to try to make fun (unsuccessfully) of the thing, then to attack the thing and finally to accept his loss.

This is somewhat the thing I want to do to purple pill people but I must be careful to choose strong enough individuals. Words can't kill people but ego can.