I'm straight, so classifications such as "Too big", "Perfect, just right", "Somewhat smaller than I prefer", and even "Irrelevant" are irrelevant to me.
Most studies show the average cock is in the lower 5-range, so it must be okay with a lot of women and gays. However, not as a matter of preference but of personal opinion, regardless of what the average is, 5.1" -- and anything under 6" -- does seem to me on the small side, especially if it's proportionately thin. Heck, when you're bumping 5", you're heading into my territory!
Most studies show the average cock is in the lower 5-range, so it must be okay with a lot of women and gays. However, not as a matter of preference but of personal opinion, regardless of what the average is, 5.1" -- and anything under 6" -- does seem to me on the small side, especially if it's proportionately thin. Heck, when you're bumping 5", you're heading into my territory!