Cuckold's penis sizes

I am new to this forum. Is it the norm that all cuckolds have a small penis? Is that we they are cuckold? This is the pic of my penis.
I think it goes or can go both ways. Men having a small penis are mostly less effective in providing their wives good sex simply because of the size but also because of the less self-confidence their have but also sometimes of the lower sexdrive they have sometimes induced by lower testosterone that also induces less hard and keeping it up longer. The les hard and the lesser frequent you have erections the lesser the penis works and even shrinks of not being used and trained. Otherwise being cuckolded and in chastity also induces the reduction of the size and functioning of the penis. It is scientifically proven that in gay men the bottoms are average having smaller penisses then the tops.
 
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