Video of masturbation technique that can damage the spongy chambers of the penis and cause phimosis

Source: http://adolescentexxx.tumblr.com/post/118431075533/kyokemokyo-lush-tight-foreskin-on-this-twink

Editor Note:  Things to note:  The underside of the penis - the corpus spongiosum - is very flat - it seems deflated.  You can see this when he takes his hand away at the 1:15 mark.  Another thing to note is the pronounced red line called the raphae.  A frequent feature of phimosis.  Again - a thing to note - is that there is no sign of a skin disease such as BXO/Lichen Sclerosus.