petulant

In the New York Times, Jamelle Bouie observed, "We have a clique of powerful middle-aged men who want nothing more than to be boys," following "a selfish, petulant and narcissistic man-child" of a president.

And the public is petulant, demanding more of the same, but losing interest if you don't evolve.

Obama has his own share of hits against Trump, mocking him as a petulant, grievance-filled narcissist in his convention speech, while Michelle accused him of benefiting from the “affirmative action of generational wealth.”

Part and parcel of their impunity is a petulant refusal to be accountable for their partners’ actions, when those activities cast the justices’ own fairness into doubt.

In social media salvos as the trial opened, Cohen used a scatological nickname for Trump, taunted him to “keep whining, crying and violating the gag order, you petulant defendant!” and commented acerbically on his defense.