During the first encounters wife had with other men with me watching or interacting, those guys weren't particularly much larger than myself, so the focus was all in her experience and the thrills of sharing.
But when she finally faced a really big and meaty one, I could noticed some things.
First, the stares. Wife not only enjoyed playing with that cock but she kind did some pauses looking and feeling that big piece very hard for her. Then, it seemed she felt the pleasures just easily, I mean she squirted easier and faster and the guy didn't have to sweat and put a sexercise to make my wife feel all that pleasure. Also, I noticed she felt more challenged to blowjob it and put some more effort.
It is beautiful to see a horny women playing with a proper cock.