The joining together of the words shit + nonce.

A shonce is someone who has a sexual interest in children but lacks the ability to carry it out covertly, ultimately leading them to being caught.
Unlike Jimmy Saville, Cavan was caught the first time he had access to a child therefore was branded a shonce.
by Matt.Ed May 30, 2022
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A service one pays for on a monthly and sometimes weekly basis depending on where you live in order to be covered in case of an accident.
Say my man, how much does my my shonce cost for a 1976 pinto.
by bubba carter December 19, 2007
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