Hottub!!!
I jumped in the tub two winters ago with some pills and weed, and I swear my body just completely dissolved for about two hours. Keep the tub below 99, though.
Also, my wife use to work for a chiropractor, and we would sneak into the office late at night on our way home from clubs and lay on the traction table and the jacuzzi table. The traction table vibrates and has a wheel that runs up and down your spine, delicately adjusting it's height and nearly causing spontaneous ejaculation. The jacuzzi table is like a waterbed with jets in the mattress. We almost passed out there once or twice.