Actually, the most offensive words are short, one syllable words that start with a consonant, sometimes two, followed by a single short vowel, with a consonant at the end, usually a plosive consonant (the plosive consonants are p, b, t, d, k, and g). Shit, fuck, cunt, twat, fag, slut, piss, bitch, dick, cock, crap, jizz, tit...all these words follow the pattern.