Abstract: A message-carrying, antenna-mountable windsock allows a car owner to express a thought or concept. The windsock is tubular, preferably tapered, and is attached to the antenna of an automobile via holes in the top and bottom sides of the front end of the windsock. Several holes are provided for enabling the windsock to be horizontally positioned regardless of the angle of the antenna. The windsock is held in position on the antenna by a segment of slit rubber tubing, plastic twist ties, or both, positioned on the part of the antenna's shaft inside the windsock. A message, advertising, etc. is printed on the side of the windsock. The sock is very inexpensive to produce and the stock is easy to attach and remove.