A truncated word meaning "vagina genius" A person who is highly skilled at operating the sexual mechanisms of the vagina. Not associated with any particular urinary or partus proclivity.
Sally: Hey Jane, I heard you hooked up with Scooter. Was he any good?
Jane: Oh yeah, he got me off like twelve times. He's a vaginius!
Jane: Oh yeah, he got me off like twelve times. He's a vaginius!
by Johnny Wu November 10, 2008