This site is great!
I like to masturbate best when lying on my back in the shower. I usually adjust the showerhead to a light stream and position the stream of water to massage my scrotum as I lie on my back. I use either vaseline or baby-oil for lube as they are both water resistant. I slowly stroke myself while relaxing completely to create an intense orgasmn. This is by far my favorite way to masturbate.