Some crude references including some uses of such words and phrases as "masturbate," "shag," "wank," "get around," "turn me on," as well as the lyrics of the song I've Got a Feeling mentioning a wet dream and a "hard-on," sung repeatedly throughout the series.
In somewhere around the second part (disc 2) a black and white image is put on screen of a man (not one of the Beatles) standing with two women dressed in what look like very very tiny bikinis.
Profanity
Moderate
Around 11 uses of F*ck and variations in part 1
10 uses of F*ck and variations in part 2.
7 uses of F*ck and variations in part 3.
Words like "Goddamn", "Hell", "Bloody", "Shit" and many uses of "Fuck" is used many times in The Beatles behind the scenes documentary.
Alcohol, Drugs & Smoking
Mild
Many members of the crew including the band smokes cigarettes at almost every moment and discuss the use of illicit drugs for recreational purposes.