Odd Penis Size Changes

I hang 6x6 "cold shower" flaccid, 7x6 normal flaccid. Erect is 11x7, so that's more than half the length, and most of the girth, I guess that makes me a shower.

Like the "Sponge" fellow, though, there is a tumescent state where it grows to about 9 or 10 inches but still hangs soft, although by then the foreskin has retracted. I look deceptively impressive when I step out of the shower or bath, I can't help staring at myself in the mirror when it does that. Makes it look like it's gonna grow to about 15". :) In my "sponge mode," I don't gain any girth at all, it's all length. I can't maintain that state, though, as soon as I become aware of it I start getting a full-on stiffie.

Oddly, in other situations, it can start standing erect before it has reached that length. Temperature and my state of arousal affect that.
 
Speaking of odd.. I am larger with a moderate hard on then I am with a really hard on.. well thicker I mean.
 
I've known several guys whose erections changed size depending on arousal. I personally refer to it as "bonus dick". Some guys get an extra inch or even more at the height of arousal, which is easy to notice when giving oral. Like others have said, it's all perfectly normal, just something that make you unique.