When self-parody lacks ebullience but instead reveals (even sporadically) a contempt for one's themes and one's materials

her most ebullient praise

This student mother had an ebullient, infectious, even defiant personality that softened the pawnbrokers.

a career of teaching high- school social studies in the city district, daring principals to fire him for his ebullient Trotskyism

It was me on the edges and an ebullient monster in the middle

an ebullient Trump