merry-andrew
1. adjective Amusingly foolish or idiotic; of or characterized by clownish behavior or sensibilities, especially in public. Though at first I found him quite funny, Tommy's merry-andrew routine has grown quite tiresome lately.
2. noun A person who acts like a clown or buffoon in public, especially for the amusement of others; a fool or idiot in general. I know you enjoy the attention that being a merry-andrew brings, but if you act like a fool all the time, people will start believing you actually are one.