n. (metaphorical, yet, often simultaneously literal) one who habitually and effortlessly utters falsehoods in a most blatant and profane manner, all the while maintaining a lackadaisical appearance of ingenuousness; despite, or perhaps, due to the fact that their entire corporeal membrane is filled to bursting with an inexhaustible supply of foul, though nitrogen-rich fecal mendacities waiting to be excreted into their victims' ears
I can't believe you'd give any credence to anything that lying sack of shit says!
(insert name of any living politician or other person who wants something from you here) is a lying sack of shit!
Poorly dressed, spoken and educated people at the lower end of the socio-economic scale. (See also Chav,Bogun,Trailer Trash)
Known for their prowess at stealing cars and their utter disregard of birth control options. In addition to an extremely high swear-word vocabulary, their children have constantly running noses, dirty faces and unkempt hair.
Those kids are such ferals - I just heard the 5 year old say "F#$k you, man!"