I tried the toilet paper roll test the other day with a standard roll [5.5 inches in circumference along the outside. The inside would have a slightly smaller circumference maybe 5.2 inches.] I failed the test, i.e. I did not get my hole dick in there as it got too thick at mid shaft. So I was wondering if anybody here thinks that this is a valid test for having a big girth? Also, would this mean that I could wear magnums without slipping off?