I am trying to get away from constant tape measuring, so I will just use the TP roll test as a way to gauge girth. My question is, how much over the interior circumference of the roll do you have to be to still fit? For example, if the interior circumference is 5.25, I would assume that a penis with a 5.4 girth could still possibly fit, since the CS will compress some, and there will be some give throughout the penis. Also, most penises are not cylindrical, which complicates things. What got me thinking about this is that, oftentimes, my semi erect penis that has a similar girth does not fit in the roll, while my erect penis may slide in tightly. My semi erect measures about 5.25, and simply stops when it meets resistance from the TP roll because it is softer, while the erect penis still goes in. Other times, which I suspect is EQ related, my erect penis will not fit into the tube. Pretty much, my question is: at what point will an erect penis not fit into the 5.25 tube?