Every guy when truly, truly soft is anywhere from 1-3 inches. I'll even throw in 'potentially' between 4-5" to be extra extra generous, but that's pushing the limit of flaccid imo and we're probably talking more about the 'softer' side of 'semi' rather than completely flaccid in that instance.
Which brings me to my other point: there is really no such thing as a "show-er".
If a guy is sporting something in the 5-7" long range, then that is always a semi at least (if not a full hard on). You could stick that same guy in a meat locker and I guarantee it's going to get smaller. There is no, "Well I'm a show-er so it doesn't get any smaller than this bs"
Oh yeah, and it's not a man or woman thing. People in general are just terrible at telling hard vs flaccid, how long something is, how thick it is, etc. etc.