Sure is!
"I got a great one.
One day a blonde decided to dye her hair because she was tired of all the blonde jokes. She also bought herself a fancy new car and went for a drive. She drove by a pasture with a shepard watching over them. She stopped her car and walked up to him. She said, "If I can guess exactly how many sheep you have, can I have one?" The shepard looked skeptical but agreed. She stared long and hard at them and finally said "187". The shepard was amazed. "That was exactly right. I guess you can have one." She walked all through the sheep and finally picked one. When she was about to pull away, the shepard stepped up to her car. He said, "Ma'am? If I can guess your natural hair color, can I have my dog back?""