Behavior which is emotionally consistent with having an extremely small penis. In general, this includes pettiness, overcompensation, whining, backbiting, or jealousy.
Description of a - usually male - person who gives off the vibes of a man who has problems or suffers from with a small dick and consequently overcompensates by projecting male stereotypes.
Andrew brags so much about his monster truck, he is so smalldickenergy.