You decide to use the Breastinator on yourself. You take your clothes of to better expose your skin. With your open chest exposed for all the world to see, you test the gun by placing the barrel between your boobs. You pull the trigger and are shocked to see a third boob growing out for and pushing away your original breasts. You quickly let go of the trigger before this new growth surpasses you 2 other, C-cup breasts.
"It works! It actually works!" You think to yourself.
You look at the pile of clothes that you had just taken off, specifically your bra. It had three cups. You point the gun at your right boob and pull the trigger, keeping your eyes trained on your bra. As you boob begins to expand beyond the point of being ridiculous, so does the right-cup of your bra. Not wantiwanting to put too much strain on your back, you shrink you breast back down to a reasonable E-cup. You grow the your other 2 boobs to match.
You stare at the gun in your hand. Your mind fills with all sort of weird ideas that you have to try.