Milk the cow

In this technique you "milk" your penis as if it was a cow's udder. It can be done by standing up and leaning forward (you can place one foot on a chair/bed), then pushing the penis backwards with one hand so it will be pointing down to the floor (don't push too hard, you should not feel any pain). Now "milk the cow". You can use lubricant and exchange your hands from time to time.

Another way is by laying down on stomach then raising your butt up in the air, pushing the penis backwards and "milking" it. Place a towel underneath, as this could be messy.

Illustration videos: Francois (pic): part1, part2 - Joe (pic): video - Jonny: video

(Source Male Masturbation Techniques)