When a man dips his penis into unlit napalm and proceeds to stick it into a woman's vagina or rectum, or a man's rectum, pulls out his penis, and then lights the given orifice on fire, effectively incinerating the receiving party from the inside out.
Someone with a pretty small penis but is outrageously confident about it and still claims to be a “sex god”. Eveb though size doesn’t really matter but a good attitude does.
“I was totally into this guy who had a below average dick but he had the whole napoleon dicksyndrome and it really put me off.”