Girls tell me?

Well it depend on the guy she is with. You can work with little penises. Or try not to hurt his feelings. Be honest is the keys answer.

Yep it matters. Bigger feels better but there is too big too. For the record I think width is more important than anything.

No, not really. It's how you work it.

Not a girl, but in my experience the answer is maybe. The biggest factor is the girl. I have been with girls where my fist fit better than me and deep fingering worked best...this relationship didn't last for long - I moved on.

In every other case, the answer was not really, if the guy can muster at least 5 inches it has to work. I am plenty bigger than that, but I am not huge either. Knowing how to work it both in an out and how to pulse you boner at the right time make all the difference!

Width far more important than length.

Of course it does. Unless she hates sex.