Pearlgem,
Try this and see if you begin to understand.
Grab you nipple, and squeeze hard. (You don't have to if you already know what it feels like.)
Now... carress your nipple and start stroking your clit and as you get more and more turned on, start to slowly squeeze it... harder and harder... by the time you get to the point of no return and start cumming, you should be squeezing nipple as hard as you can stand.
Next time... be squeezing even harder as you cum.
Pretty soon, you'll want help... someone who can either free up your hand so you can attend to both nipples at once... or someone who can deal with your nipples for you.
Let us know how the demonstation works for ya.
