Back in the early days of the forum we had a home made experiment thread on this very topic. Bunch of us running around the house with a tape measure and sticking things in our mouths. Some of the female moderators plaid along (mostly to drive the thread because they thought it quite funny that the guys were doing it) but it only told them what they already knew.
It was a real eye opening experience got the straight guys. 5.5”s and most were gagging and/or hitting teeth.
LOL, I thought I was the only one doing that!
There’s an actual measurement on record for the normal capacity a mouth can open for the ADA and AMA. In diameter it’s 45mm-55mm for women, that’s 5.6” to 6.8” of girth your head can be and still fit into her mouth. I said head girth for a reason, because even most male porn stars have a head that’s slightly smaller than the shaft behind it due to excessive pumping. If you had an even taper increasing down the shaft from the head you could easily fit into her mouth with a head girth of 5”-6” and be 6” or even 7” at the base. To argue over how much of your penis will fit into her mouth at different measurements is such a pointless argument, it’s your head that matters.
Let’s end this ‘uh-huh nuh-uh ‘debate once in for all by saying if you want girth over 6” then go for it, but what might be right for you may not be right for others. I just really don’t see the point in coming onto a PE website and telling members to not reach their goals. They can reach that decision all on their, that’s not going to be for a long time.
Bpel: 8", Bpeg: 6", Mbeg: 5.75", Meg: 5.5", Aheg: 5.25", Heg: 4.5" - 11/18/11
Bpel: 8", Bpeg: 6", Mbeg: 5.875", Meg: 5.63", Aheg: 5.38", Heg: 4.75" - 5/18/12
Bpel:+1/4", Bpeg:6", Mbeg: 5.875", Meg:+1/16", Aheg: +1/16", Heg: +1/16" - 6/18/12