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I would think if you could pick 20 guys at random and make them drop their pants, I think at least 7 or so would be wearing panties. Just a guess though.
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Roses Dept. Stores have great Granny panties, they are Carole brand. Nice wide crotch. Really a great pantie for guys. Very comfortable. Roses Dept stores are down south along the coast. Eastern shore Maryland, Virginia, North and South Carolina.