Someone who claims to have more testosterone than you. Shows this by purchasing expensive and outrageous pieces of bling. Has to constantly prove he is more macho than you. "Little dick syndrome".
Barry must suffer from LDS because he told Steve he had more testosterone than him.
A dinglebarry is a person who is an egotistical, self righteous prick suffering from little dick syndrome.
John claimed to be the best pilot on his team. George told John not to be a dinglebarry.