Boomdangle refers to a penis that has only reached half
erection. This can also be known as a chubs or mini-bone. It occurs when a male is unsure about the circumstances he is in or is under the influence of a mass amount of
alcohol. It is also cause by a minimal amount of fear that is not fearful enough to bring on the full fear boner.
Comes from the English Words "
boom", which refers to the erected part, and "dangle", the flaccid part.