Rumer: the act of licking out an ass of a partner. Similar to a Rimmer, which is the act of licking the anus of your partner. But what separates the Rumer from the Rimmer is that the partner who does the licking has a mouth full of jelly. I have found that Strawberry works the best, but flavor is based on preference.
John gave me a rumer in the bathroom of the organic market with some newly bought peach jam.