SIZE MATTERS apparently...
The female orgasm is a very complex subject and every aspect of it is being researched throughout the world. Of all the variables that goes into the female orgasm during intercourse, penis size has always been THE most talked about for everyone. You have probably heard the phrase "It ain't about the size of the boat, it's about the motion of the ocean". For those that haven't heard of it, it basically mean "It's not the size of the penis that matters as long as you can give her pleasure". According to The Journal of Sexual Medicine however, it looks like size does matter. In a study conducted by University of the West of Scotland, they found that women who reported the highest number of vaginal orgasm in the past month were most likely to say that longer was better. The study was done with a small sample size of local population so it's not conclusive by any means but it doesn't look too good for anyone using the "Boat size" saying. In a common sense way it seems logical. Bigger/Longer means a more surface area touching increasing your chance of finding the ever elusive G-Spot. Scientist spend 60 years and still can't find the G-Spot so every little bit helps. You can read more information about this via Livescience