Magnums are actually a total farce
Sorry to burst your bubble, fellas, but Magnums are a sweet marketing maneuver and (very) little more. While they're sized to accommodate a girth of 5.3 inches or more, they actually will fit most penis sizes… including the very, very average. This specialty branding of Trojan belies a product that is the same length as regular condoms, and the same circumference at its base. It basically just occurred to advertisers that guys would be pumped to buy anything for their johnsons marked "magnum".
Condoms used to cover just the tip
Glans condoms used to be all the rage, and often made from animal bits. Pre-15th-century-China, little pieces of oiled silk were put over the end of the penis. Meanwhile, guys in Japan sported caps made of tortoise shell for the tips of their dongs.
Condom quality control is electric
To test for holes and tears, factories send electric currents through condoms
... and involves test "models"
Assembly line condoms destined for real-world use can undergo the electricity test; but there are other tests conducted on samples to check on overall strength, likelihood of tearing, and the like. For these, sample condoms are subjected to airbursts, water, and even unrolled onto dildos and (in the case of female condoms) rubber vaginas.
There are so many ways to set records with condoms!
World-record-related condom bests include: longest bungee cord made of condoms, the most amount of times sucking a condom into one's nose, and most condom packets stacked on head.
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Nicole Caldwell is Thrillist's Sex & Dating editor, and used to love watching Herman's Head.