Wife and I have been to swingers parties and she has had bigger and smaller as I was doing their partners but none have made her cum like I do. I get jealous when the larger guys get in her but i've entered her right after they exited and cannot feel any difference and my motion makes her cum immediatly to the point of squirting. She tells me size doesn't matter and all the fems of the larger guys put me on the to do again list so i guess larger is not that big of an advantage LOL