pompous — showing an inflated opinion of one's own importance; self-important and pretentious

a well-dressed man sits at a fancy table, dramatically gesturing with his hands while speaking loudly to a waiter. He leans back in his chair with his nose pointed upward and chest puffed out importantly. The man snaps his fingers condescendingly while pointing at his empty wine glass with an entitled expression. His body language shows he believes he deserves special treatment above all other customers. The waiter stands nearby looking uncomfortable and annoyed by the man's demanding behavior. Other diners at surrounding tables turn to stare with disapproving expressions at the disruptive scene. someone displaying an inflated opinion of their own importance through pretentious and self-important behavior