None, outside of Duke Nukem videos.

Tends to very on the games he reviews.

Clint rarely uses profanity any stronger than "Crap" in his videos, he mostly uses alternatives like "Dang". He occasionally uses words like "Hell", "Dick", "Wank", "Bastard", "Piss" and "Damn" as well. Anything stronger ("Fuck", "Shit", etc.) is bleeped, but this rule doesn't always apply (eg, in Clint's Sims 4 Clue Mansion video, PushingUpRoses (Another YouTuber who sometimes appears) says "Shit" at the beginning, which isn't bleeped).

None, Unless the game he features on an episode (mostly Duke Nukem) contains any of these.