A term mainly used in fanfictions. It means that the members of the Las Vegas Band Panic! At The Diso Ryan Ross (lyrics, guitar, backup vocal) and Brendon Urie (vocals, guitar, piano) are an item.
It is composed of the "Ry" from Ryan and the “don” from Brendon.
Sometimes the term Ryden is used in the same connection. Then the word is build up of the nicknames of both: RyRo and Bden.
Sue: Lately I’m really tiered of all these Frerad and Treckett fanfictions… Do you know anything else good I can read?
Amy: Does that mean that you’ve never read a Rydon fic ?!?!