go to the liquor store, buy two "shooters" of your favorite whiskey (or rum or vodka etc), they are plastic bottles now instead of glass. Go home, drink them (NEVER waste good liquor!) and fill them up with warm water and while leaning over the sink squeeze as much water out of the bottle as possible and while squeezing put the bottle over your nipple into the opening while pressing the bottle firmly against your nipple and then release. Try to keep the bottle vertical to prevent air inside the bottle. When you release the bottle your nipple will be sucked into the neck of the bottle. CAUTION- dont over do it at first, slowly allow your nipple to get used to the stretching. I have worked up to leaving mine on for upwards of a half hour and when i take the bottles off i have measured my nipples to 3/4 of an inch erect. Of course, the nipples will shrink back down after the blood flows back out but over the next couple months your nipples will remain erect 24/7. Check with a doctor before attempting this to make sure no damage will occur. too late for me, mine never go below 3/8 of an inch. Fine by me, my nipples have become so sensitive that i squeeze and roll them between my fingers dozens of times a day!!