trumpeter

1. A person who embodies a brash, unapologetic, and often untrustworthy demeanor, often flaunting their power or influence in controversial or offensive ways.
2. Someone who aggressively promotes themselves or their interests, often disregarding social norms or the feelings of others.

Example: "Did you see him at the party last night? He was such a trumpeter, acting like he owned the place and grabbing 'em by the pussy"

Verb
To flaunt one's perceived superiority or power in a crude or offensive manner.

Example: "He was trumpeting around the office, bragging about his weekend escapades without a care for who was listening."

Hey, isn't that guy a trumpeter? I heard he lives high on the hog because he lies and doesn't pay taxes..