Dictionaries:
Sexual DictionaryDictionary of the F-Word

piston job:

An act or instance of oral-sex on the penis . See fellatio for synonyms.
See Also: 9 to 5, 9-5-er, B.J., bang-up, BJ, BJLs, BJM, BLJ, blowing, job, milk cow, nine-to-five, nine-to-fiver, stern approach

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