In one episode, Will attempts to have intercourse with a girl but ends up awkwardly doing it completely wrong. No genitals or rears can be seen.

Overall the TV series contains sexual humour and some strong at times (mostly moderate)

In a scene, a main character is in a school coach and makes a rude hand gesture to a car (a middle finger gesture)

In one episode, Simon and Jay change Will's facebook profile picture to a naked man. You can see a fair bit of detail however it is quick and easy to miss

Two of the characters notice that Simon's "got a boner."

Constant crude sex references throughout the series. And a lot of different anatomical terms.

There is some brief nudity (full male rear nakedness) in a couple of episodes.

It is comically implied that one of the teachers is a pedophile.

A group of boys watch porn on their phone. Only their disgusted faces are shown.

In one episode, the school bully gives a kid a wedgie and rips his pants? No nudity

Jay is caught masturbation although nothing is seen.

A man pukes on a table and then on a boys face

Season 3 contains subjects related to animal death and animal abuse.

A lot of threats, mostly from the school bully.

Will accidentally hits a disabled girl in a wheelchair with a Frisbee.

Neil punches a fish to death. A little bloody, not particularly pleasant.

Strong language is used in every episode. There are frequent uses of 'fuck', and 'shit' in the series, among other words like "Wanker". One use of 'cunt'.

Mild language is also used.

Some strong sex references and anatomical terms, including 'dick', 'pussy', 'cock', 'gay', 'homo', 'bent', and 'bummer'. Also a mix between the two words 'bummer' and 'bender' is used being said as 'bumder'.

Infrequent drug use, alcohol consumption, and smoking.

Several episodes include underage drinking, and the boys attempting to purchase alcohol with intent of getting drunk. They are never able to buy any, except one episode, although they immediately suffer repercussions for this.

In one episode the characters get high.

Dark comedy is present at times in the show

There are a specific scene where a character intentionally runs over a squirrel. It may be very disturbing for some viewers. It's only one episode and it's not the tone of the show.

The scene where Neil punches a fish to death isn't nice, but not disturbing or overly graphic. Played for laughs.