Do you think this dumb blonde joke is funny?

Three blondes are in an elevator when suddenly the elevator stops and the lights go out. They try using their cell phones to get help but have no luck. Even the phones are out. After a few hours with no help in sight, one blonde sais to the other, "I think the best way to call for help is by yelling together." The others agree with the first so they all inhale deeply and begin to yell"TOGETHER,TOGETHER,TOGETHER!"