Virtually none. Occasional kissing and flirting, but nothing else.
Violence & Gore
Mild
One comedy sketch shows a person outside the foothill's road sliding out of control on the road and scraping on it though it's played for laughs.
Some sketches have violent moments, always played for laughs. Some characters die in comedic ways. In one video, a man's face is hit repeatedly with a soccer ball, which leads to his face being all bloodied. In a few other sketches, characters are shot offscreen. In another sketch, characters falsely believe a man is going to commit suicide. All of these are played for laughs.
Profanity
None
Occasional use of mild insults such as words like 'stupid',' jerk', 'dumb'. All of the insults are very, very mild.
There is only one use of 'crap' in the entire series. It is said in 'Valuable Love Potion From a Tiny Wizard'. Otherwise, none whatsoever.
Some euphemisms for very mild language, such as 'darn' and 'heck'.
None.
Alcohol, Drugs & Smoking
None
Some sketches reference drugs or smoking. One sketch set in Victorian England has a character attempt to light his pipe. Another involves a parody of Breaking Bad, in which the meth is replaced with math. Another includes characters who believe that insulin is some other illegal substance. Very mild when it's present.
Frightening & Intense Scenes
None
None.
Though there are some violent moments, they are all played for laughs, and are neither intense or frightening.