1. Slang for a short man of who is arrogant.
2. A person who acts pretentiously or who publicly parades themselves, their possessions, or their accomplishments
3. A man who sexually harasses women.
4. A synonym for show off.
That man over there is trying to pull off a "Bosco Melcon."
I can't stand people who try to flex what they don't have. That person is such a Bosco.
"Eww", look at that "Bosco!"