Well, think of when you were going through puberty and suddenly found yourself pitching a pup tent on the not-so-q.t. (if that's even true and not just a myth) - it's kinda like that, only a lot less noticeable to passers-by.
Starboard,Boxers makes it MORE noticeable, but also more comfortable. Don't you agree? With briefs you're like strapped in!rt