The combination of Vah-jay-jay and Anus. A conversation way of describing both. Could be used when talking about 'the shocker'. Not to be confused with 'vaganus'.
In a scene from the movie True Romance, Samuel L Jackson and Garry Oldman are talking about eating pussy. Jackson says: " I eat the pussy, I eat the butt, I eat everything." More effeciently, he could have said: " I eat the Vajanus."