When in the shower or on bed or whatever, i lay on my back, tuck my one leg up (one at a time) to my chest reach underneath and grab my penis an inch bellow the glans, then press down with my leg like i'm trying to straighten it. Usually using the weight of the leg is plenty of force. This way i can focus on my grip while i use my leg to apply pressure. It gives me a good stretch.. now more important question.. is it good?

Then with the other hand i do the same thing with the other leg and stretch the other way. Both of these ways stretch down and to one side. This stretch i feel good.