Sexual
'Verbal insults often take a phallic form. Almost all the really vicious swearwords we can use to hurl abuse at someone are sexual words...Visual insults follow the same trend'.
Junior school often sees boys 'use sexual swear words and symbolic sexual gestures to unsettle and overtly intimidate girls'. Some sexually pejorative terms are indirect or targeted at ones parents, such as "inbred" or "bastard".
Read more about this topic: Insult