My fren a guy did go wax his underarm hair. He said it is indeed painful, but just for a second when they're going to pull the wax strip. But, he said waxing is better than shaving coz ur skin will become smoother and the hair will take longer time to grow...

Hahaha, this myth is so not true. Have you watch ion thorpe during regular days? He's got hair all over his body u know, his chest, underarm, thigh... Those swimmer shave their body hair before competition to reduce the water friction...