After reading about Daedone's experience, I may have to revise my entire view on Zen ... or maybe I just haven't been to the 'right' Zen centres.
Anyway, orgasmic meditation or ‘Oming’ is a term coined by Daedone to signify a special type of sensory awareness. More specifically, it is a mindfulness practice in which the object of meditation is ... finger to genital contact.
I will stop there lest you or I get too excited.
For more information see this ABC News/Health article ... as well as this YouTube video ... and have fun!