For me I started to shower shave at around 14yrs old. There was a DJ called Pat Sharp here in the UK at the time. He used to play music that wasnt really my taste, but I caught an interview on TV with him and one thing stuck from that interview was he said "always shave in the shower,". Strange comment to make for a kids TV interview but it just stuck in there. Ever since it's been 'shower shaving' I can count the amount of sink shaves I've had using fingers and toes. It works for me anyone else, by the way I'm now 39 several times over, and missing a finger on the left hand. Makes guitar playing interesting.