Abbrevated form of rimjob the act of having your asshole licked. rim J is only used for man to man action and may be used to describe a douchebag.
by Mr.Moneybags April 06, 2010

tim: aww i was so fucked last night but i mouth taste like shit
dave: oh yea i for got to tell you you gave clair a rim-j
dave: oh yea i for got to tell you you gave clair a rim-j
by shaolinmunchkin July 02, 2008
