Disgusting to give, refreshing to receive. This act of cleaning/pleasure involves parting the buttocks of your partner and inserting your tongue into the anus. You then proceed to lick in a circular motion thus rimming the anus with the tongue. Most rimmers choose to freestyle.
This act is not recommended for the feint hearted, squeamish, after eating a spicy meal or beans.
It is customary to wash the anus before rimming.