We have met cucks with all sizes of penises, from huge to micro. While penis size does not put a man into a cuck role, a tiny penis where his wife needs more can definitely be a major influencer.
My wife and I were on vacation outside the country and stayed at a beachside cabin. My wife spotted a man on the beach that day with a large bulge in his shorts, and that evening, he was at our cabin. He was confused that I would be ok with my wife fucking him and asked questions. My wife decided to show him why she wanted his cock. In her typical graphic display, she undressed me and simply said, "Look!" while pointing at my small cock.
He seemed shocked but then told my wife he felt so sorry for her and he understood. His only precondition was that I would have to stand outside the room on the balcony while they fucked, but I could watch and listen. He really hammered my wife that night with is large cock.
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