the act where you insert your fist into one'sarsehole with the addition of your mates to the point where the recipient's ring piece splits open and is sore for 3 months after wards.
last night i got rim fisted by kyle and his mates, my arse felt like it ripped apart from the many fists in which were inserted at once
a tongue in the ass, usuallyhomosexual, and usually the most intimate of contact. Not limited to hiney-huffers.
In this evolving world, Sy the straight guy is afraid of his own ass, doesn't know how to wash that ass correctly, and therefore will remain oblivious to the infinite pleasure of a Rim Job.