The word "slut" was used.
The word "Douchebag" was used.
"Suck," "god," "crap," "piss," separate uses of "hell" in the HISHEs for the Harry Potter franchise and the final Venom trailer, "a-hole" abbreviations, and a "WTF" acronym in the "Harry Potter and the Best Picture Summary" episode respectively. All expletives stronger than the ones listed are usually bleeped out with the mouthing of said expletives from maskless characters usually covered up with a "cuss" bar.
Almost none, words like "crap", "pissed", "turd" and insults like "stupid" and "idiot" appear somewhat often.
Actual bad words are extremely rare and are censored in some way.
In The Social Network episode "asshole" is bleeped and near the end of the episode someone says "don't be an a-hole" (the actual word is not said this time so it isn't bleeped).
Near the end of the Deadpool episode, Deadpool swears a few times but is bleeped every time.
Occasional moments of almost cursing that is cut off before anyone can say anything.