Instead of wearing loose fitting boxers that make an erection visible and obvious, you should consider wearing tighter underwear like briefs or Penis erection in class briefs that can hold down your erection and make it less obvious. Wear dark jeans in place of dress pants and make sure that your pelvis area is not touching the person you are dancing with. Go to somewhere secluded until it goes away. If Penis erection in class too embarrassed to go outside because of your erection, you can do jumping jacks or squats in your house. These methods have saved my social life.