I was wondering, how do straight guys know if their penis is the average size? After watching a porn flick with my girlfriend, the porn actors having 14" dicks really crushed my self confidence. I was wondering if there is a way to increase a penis's size with some sort of machine/sleeve (I know there are pumps, but as soon as your dick comes out it doesent look so big anymore).

Are there ways to tell if your dick is a normal size, because when im soft i have to say im veryyyy short.

Sincerely, yet troubled
-Alex