attitudinize (verb)

1. During the party, he attitudinized as a snobby Hollywood celebrity, bringing laughter to everyone with his exaggerated gestures and fake accent.

2. In his daydreams, he would often attitudinize as a fearless superhero, striking heroic poses and saving the imaginary world from evil.

3. The actor was hired to attitudinize as the voice of a goofy cartoon character, bringing the animated persona to life with exaggerated expressions and intonations.