Somewhere between 5cm and 8cm inside the front bottom, but here's the tricky bit - it can be tucked away anywhere between 3-15mm behind the *cough* wall.
Sort of a little teardrop-shaped bag. It has a head roughly 3.5mm across, a middle roughly 3mm across and a 1.5mm tail. It also has blue splotches on...
Probably not the way you hoped. And definitely not in the missionary position. Let's just leave it at "constant pressure and attention*".
Read more: http://www.news.com.au/technology/sci-tech/scientist-finds-g-spot-then-cuts-it-out-and-dissects-it-for-the-world-to-see/story-fn5fsgyc-1226337993697#ixzz1t4YK8Dt2