The name given to a dog whose bobbed tail resembles an erect penis or a dildo. When exited, the dog's tail will rise in the air and wag vigorously. The name was created as a pun/reference to the popular character from J.R.R Tolkien's "Lord of the Rings" series and "The Hobbit", Bilbo Baggins.
As soon as Jimmy threw the tennis ball, dildo waggins was galloping majestically, tail wagging like a metronome at 9001 bpm.
by Encyclopedia Shitannica January 27, 2014