Regarding the application of shampoo on the male scalp, there are two distinct schools of thought.
The first school of thought advocates the conventional process of applying shampoo on the wet scalp and gently massaging with the tips of your fingers. As illustrated by countless television commercials, you also take some time to grin widely at yourself in the mirror. Then computer special effects appear in the form of orbiting, blue lights that snipe off the growling dandruff-people one by one. At the end of it all, you have hair that is long, glued together and shines like nobody's business and your face turns into Katrina Kaif's. Or if you're a guy, your hair turns wavy and glitters alongwith your shiny, white teeth in all its Backstreet Boys style and glory. Also, you look gay.
The second school of thought is worth a mention here. The procedure does not involve singing any musical Clinic All Clear jingles for one thing. Also, with the ensuing rush of blood to the head, its more fun. Step one is simple - application of appropriate dose of shampoo to your wet scalp in the sanctity and privacy of your bathroom. Next, you screw your face into an expression of duty (for understanding what this means, watch Bruce Willis at the end of Armageddon. Or Nirupa Roy as she shoots one son or the other at the end of any Hindi movie). Now place your hands on your head, with the tips of the fingers in contact with hair and scalp.
This is where we become a bit off-beat. Instead of gently massaging with your fingers blah blah, you vigorously shake your head up and down and right and left. Doing this for long enough ensures a vigorous massage of your hair against stationary fingers kept in position.
Also, as I mentioned added benefits, rush of blood to the head is just super!