Anatomy of sex show just said longer flacid penis, equals longer errection?!

Anatomy of sex show just said longer flacid penis, equals longer errection?

I was just sitting here watching anatomy sex show on The Learning Channel. They did a segment on the peniss and an erection. They said, and I quote : The lnger the penis is when it is flacid, or limp, the more it will grow during an errection?

Now the Kinsey report I read years ago disputes this fact. They said that some guys simple have more of their non-erect penis showing then other guys. Some guys carry more of the penis inside and when they get an erection, more of it comes out. They call being hungg a "shower" versus a grower.

So which is it?

I believe the Kinsey report is correct based on sex information that I've heard.