I love the feeling, but like was posted earlier, it is better after you've been hitting it awhile. The sensation will generally make me come too quick. if she is laying on a pillow comfortably, she can take her "nonmasterbatory" hand and do both things at once! Play with her clit and let cup your balls too. That way you both can cum at the same time. When she feels your dick swelling getting ready to cum, she can either finish herself OR turn around and let you cover her face while looking up at you! Oh Yeah...
Nickelback.. " I like the way she looks up at me"