I was once told by a she-male dominatrix to duct tape my balls on a hot day wearing shorts and then ride the bus home. Then I had to pay her $20 for every time the vehicle stopped along the route and another $50 to remove the sticky tape in front of her at the end of the trip while taking her in my mouth.
Thing is that I didn't know she had a penis when we started the session...
How hot was it that day?? :)