There was a controversial use of the n-word in a live stream, which he apologized for.
His recent videos contain little to no swearing and are more aimed at younger viewers, but the streams still have heavy swearing.
One of his music videos is called "B**ch Lasagna".
Religious profanities are frequently used throughout his videos, which includes some uses of "goddamn" and "Jesus Christ".
Should kids watch? Yes, but be aware of the bad language used a lot.
Lots of use for the F-Word and the S-word.
Fuck' or 'motherfucker', and other milder language are said often. Sometimes, 70 times for a twenty minutes long video.
There is one use of "cunt", but it is quite hard to hear and it is only mentioned in two or three videos. One time, he loudly said " You spiky, fucking cunt!", while playing "Cat Mario 4".