frigging
Concise Oxford English Dictionary © 2008 Oxford University Press:
frig/frɪɡ/
▶verb (frigs, frigging, frigged) vulgar slang have sex with.
■ masturbate.
– origin ME (orig. in sense ‘move restlessly’, later ‘rub, chafe’): of unknown origin.
'frigging' also found in these Oxford entries:

