1. (v) A slightly more polite way to say "Fuck off you prick".

A taunting phrase, essentially meaning "I don't care," used to defend oneself's actions, characteristics, or values following an accusation.

to fuck off and leave someone alone

I would have to beleive that originally 'bite me' was a slightly more acceptable way of saying 'blow me.' Just like people use fricken istead of fuckin.

Although I think it has evolved to really just mean something like 'Fuck Off!'

a phrase used in scorn, usually used after someone either a) insults you, or b) tries to tell you what to do

shut up
get the hell outta here
Fuck off