Adjective. Relevence to OCD (Obsessive Compuslive Disorder). An action or event that was obsessively compulsive, but not necessarily involving anyone suffering from the disorder.
Jason felt the need to touch every advertisement moving past him while on the escalator. Afterwards he realised that his short trip on those moving stairs was terribly OCDelicious.
An adjective describing any state of high organization that is would be pleasing to a sufferer of obsessive-compulsive disorder.
The way you have your pens organized by length and color wavelength is OCDelicious!