"Crap" and "freaking", "screw", "oh God" and "hell" are casually used. Infrequent uses of "ass", "damn", "bastard", "bitch", "Goddamn" and "retard". TV-MA language such as "fuck", shit, cock are always bleeped. "Dick" is sometimes bleeped.
The language gets stronger and stronger as the series goes on.
in "The Old West" episode, one of the characters names is "OPhone from the goddamn future" though it is never mentioned but it's listed in the end credits.
In "Truth" bucket gets mad at the computer and says "SHUT UP!". The computer responds by saying "don't tell me to shut up you piece of shit, i outta fuck you right in the asshole you fucking bastard, suck my cock, suck my dick you motherfucker, goddamn it, i'm the one who tought you how to jag off you worthless bitch. FUCK YOU, FUCKWAD". but "fuck", "shit" and "cock" are bleeped.