Hardness and the Feeling of Size
In various “size” threads at Thunder’s Place, guys have noted that their women partners cannot accomodate as big of a dildo inside them as they can an actual penis. The usual explanation put forth is that whereas the penis — especially the glans — is compressible even when erect, dildos tend to be made from inflexible materials.
I’ve observed a related phenomenon: Even though I ordinarily have pretty outstanding erections, when I take a generic ED drug before sex, and get that “110% steel” effect, women tend to comment on how my dick feels “bigger” than normal, even more than they say it feels “harder” than normal. If I measure my dick, however, its dimensions (length and girth) are not noticeably different when on an ED drug than when not on one.
The difference, then, I assume, is that on the ED drugs, my penis is almost impossible to compress, like a glass dildo or whatever. Even though we men cannot sense it, perhaps an ordinary erection is significantly compressed by a vagina clamping down on it.
The point of this isn’t to advocate the recreational use of ED drugs, but rather to point out that any erection-improvement effects from PEing may actually be making your dick objectively bigger inside a tight pussy even if your dick does not measure any bigger when nothing is clamping down on it. This is also another reason to pay close attention to “physiological indicators” when PEing and to make diamond-cutting erection quality a real priority in any PE program.