With very rare exceptions, the first time most women have seen my cock, it's already fully erect (7 inches) due to foreplay, so they already know how big/thick I am. Obviously those same women also saw me completely flaccid (around 2.5 inches) and were always impressed when they made it grow full size.
A few 'first times' started with me flaccid, so when they brought me to full erection, there was always comments on how big I was.
My flaccid size varies quite a bit, and yes, I can sometimes be as small as 1 inch, usually after being outside in the cold weather.