1) In essence a metrosexual. One who shaves body hair thus severely lacking in all masculinity.
2) A gay man feigning heterosexuality.
3) A man/boy who sags his pants below him ass.
4) An emo male.
5) Any male lead on Vampire Diaries.
'E' from entourage is the patron of all smoothe boys. Michael Bay is a prime example of a desperate smoothe boy.