Love is a common theme in the series, quite a few kiss scenes but they are all brief and never go more than a quick kiss.

As well as other minor references.

Wayne calls Kevin "Scrote".

In season 5 episode 1 Paul mentions a condom. Incorrect description of this information.

Sex, orgies, masturbation, boys looking at naked women in books, boys seeing naked women through windows, all of this is implied or talked about. Pretty much the stereotype of boys hitting puberty in the 60's.

Slapstick violence.

Some physical fights - punching, kicking, etc.

Some "hell", "damn", and name-calling like "butthead", "jerk", "scrote" and "dork".

Smoking and drinking occur sometimes but never drugs.

Many emotional moments are shown throughout the series, certain episodes can be more intense than others.

The physical fights may be intense.