First: Use concise compressed language:
Bum (North American)
Noun
a vagrant (person without a settled home or regular work who wanders from place to place and lives by begging)
a person who devotes a great deal of time to a specific activity (Choose one: Twitter, encouraging white supremacists and bashing Black professional football and basketball players, urging others like him to grab women “by their pussy”)
Second: Tell the truth:
"Going to the White House was a great honor until you showed up!"
Third: Open your beautiful star-filled mouth and speak into the waiting air without compromise.