Two young men can be frequently seen wearing skimpy clothing or being shirtless. In some episodes they even appear naked, but never explicitly as they are always covering their private areas by their hands or something else.
One of the running jokes of the series is the implication of incestuous subtext of the relationship between two brothers.
Crude sexual humour throughout.
Two brothers in their late teens or early 20s are frequently talking about sex and masturbation, usually in quite vulgar way.
Occasional sex and masturbation scenes, always filmed so as not to be explicit.