STAY WARM by placing a hot water bottle underneath your knees, whilst redistributing heat away from sensitive nearby areas by clutching your balls with both hands. If you don’t have any balls, borrow somebody else’s! Please remember to ask first, though. NOTE: You may have to alternate hands, depending on your hand:scrotum size ratio. As an alternative, you could grasp your dick in one hand and your balls in the other!
In this way, your hands will warm up, whilst shielding your balls from absorbing too much heat from the hot water bottle - thus alleviating risk to any future parenting plans!