When Did My Penis Get so Big?

I never really paid that much attention to my penis, I masturbate like every other day but I don't get obsessed with my size and comparing it to others. Even when I was like 12 first starting puberty and getting hair and all that I didn't think about the fact that I was getting bigger all that much because yeah my penis was getting bigger but so were my hands and feet. Last week my 10-year-old cousin came over and I took him to the movies, when we went to the restroom he went to the urinal and I went next to him. When I unzipped my pants he said 'How did you get so big?' I looked down at him and he had a much smaller penis and I looked back down at mine and said 'I don't know.'

I really don't know I was probably the same dick size as my cousin when I was 10 but over the last five and a half years I grew and I never saw it coming. When my cousin finally went home and I had my room to myself to jack off, my dick looked and felt so big and fat to me, that was one of my best sessions ever because I never got so into it before normally I'd just masturbate kind of passively until I was about to bust. This time I was into from start to finish.