I finally decided to measure my penis size and it turns i have a exactly 8.3 inch penis when its erect, when its not erect its about 4.1 inches. I measured it several times to make sure it's correct.
After looking at the net i am actually well above average, i live here in north america where the average size of erect penis is 6.0 inches. My ethnicity is pakistani, i heard most pakistani males have big ones, i heard their average size is 6.2 inches.