That's because the G-spot is actually the spongy tissue known as the female prostate, which surrounds the urethra (you stimulate it through the front or upper wall of the vagina). Many women are so freaked out at the idea of accidentally peeing in bed that they discontinue any prolonged G-spot stimulation, even though some of them might find that if they stick with it, it could lead to orgasm or even female ejaculation out the urethra (which is NOT pee, but a fluid that is produced from the glands embedded in the female prostate). Just pee right beforehand to be sure that the sensation is from G-spot stimulation and not the entire bottle of Evian you just drank.

But some women just don't like that feeling, and it has nothing to do with fear of wetting the bed. Some would be happy to piss all over their boyfriend if it meant amazing orgasms, but they just find G-spot stimulation either annoying or even downright uncomfortable. If you fall into this category, you'll just have to experiment with different positions that stay away from your G-spot--everybody's bodies are different, so what hits your G-spot may not hit another's.

Instead of the standard on-hands-and-knees doggy style, which usually angles your vaginal canal so his penis is bound to hit that front wall, try lying down flat on your stomach and legs so he's gliding along that front wall rather than baning right into it. Or, better yet, get your butt up high and your shoulders down low so he's more inclined to hit the back wall of the canal (though this may just mean the bottom of his penis brushes against your G-spot rather than his head). He can try holding his penis at the base and tilting it away from your G-spot as he moves inside you. Or you can even reach down between your legs and gently press up on the shaft as it goes in and out to help keep it off your G-spot (lots of lube and super short fingernails work best with this move).

Good luck keeping it naughty and nice,
Em & Lo