a mocker 

combination of "a mod" and "a rocker" coined by a Beatle during the film "a hard day's night", when asked by a reporter to what he is.

"i'm a mocker"

a mocker by charlotte corday August 1, 2003

a mocker 

or 'Mocka'

Abbreviation of, 'mocking bird', which in Australian rhyming slang means, 'turd'.

" Where's the dunny? I have to hang a mocka."

a mocker by Sean September 15, 2003