Jackjack Edit Meaning

1. shorthand form of 'motherfucker' used to express disgust, without any trace of condemnation Yo, mofalker -- get that shitass..

1. (accronym) with effect from. From this date/day on. It was admitted as a member w.e.f. May 15th. See wef, aviation, formal..

1. Economic warfare in Chinese Economic nationalism of China during 1870's included zhang yuan so that China could fight Western powe..