[Hammock Parties]

Originally Posted by Simplex3

If they worked every man in America would need a third leg sewn into their pants after age 15.

Pumping must be done very carefully to avoid injury. Over-enthusiastic pumping can burst blood vessels and form blisters. In some cases the testicles can be unexpectedly pulled into the cylinder and cause severe pain and injury. It is also believed that the rim of the cylinder can cut into the skin and over time cause damage to the ligaments surrounding the penis. Impatiently pumping without reading explanatory material can produce too much suction (any pressure lower than 10 torr) and cause permanent injury. Attempts at using vacuum cleaner units for this purpose have resulted in severe injury as the machine produces far too much suction.