I have watched many gang bang movies and those about gang bang records too but you have to agree to me that those arent realy records. The girls get fucked by each buy for 1 min or so and than the next jumps in. Here my idea.

Why doens't the girl get fucked by each guy as longs as it takes to make him come and when he comes the next guy fucks her. After that you can say that you have a (world)record You can do a competition as well. Two or more girls do the same and that girl witch fucks the most guys is the winner....