Sexual act wherein one lover squeezes the base of their partner's penis until the organ is a swollen bluish purple. The pleasure received from the act is not physical, but a mutual feeling of trust and harmony between partners.
This act was named after the Greek God of the Underworld, Hades, because of the corpse-like appearance of the penis during the procedure.
Oh Dolores, Jonathan and I bonded over a Hades Handshake last night. You and Verner should definitely try it. It saved my marriage.