To sugarone's anus, either in a hair-removal capacity or as a foreplay activity.
I'm so glad I got a Rhiannon done on my undercarriage before my big date." Or, "My new girlfriend is really into food play. One more Rhiannon and I'm going to develop diabetes for sure.
Rhiannon is a friend to two extremely cool people. She is very kind, pretty, funny, outgoing and sexay. She is also a good horse rider but smells of digested cheese.
Person 1: 'Hey look, its Rhiannon!'
Person 2: ' I know, I can smell her from here!'
Basically an attention seeking thot that goes on servers and gets attention from meme lords, and 12 yo. In the process acting as a thot would and getting someone in shit with the police.