Concatenating the words 'wank' and 'masturbate' to form an extreme version of intense masturbation.
'The instant I saw her naked I had to nip to the loo and wanksturbate myself silly.'
Formed by combining the two words 'wank' and 'masturbate.'; The same meaning as masturbate.
Tom's wife doesn't have sex with him very often, but he always finds time alone to wanksterbate.