The Drip Setting
My favorite thing to do, when I just feel lazy and don't wanna jerk or anything is lie down in the bath (or sit in the shower), turn the shower head to drip, and let it flow on my penis. It works best on the bottom of your penis, because if you're fully erect, it's hard to hit the underside. But if you lie down your penis goes flat. This may take longer than you're used to and requires patience, but the edging is divine.