“…Make your breast balls bigger before you do anything to me.” She honestly told you.
At that point you were sitting upright on the top of your bed and gasped as you cried in shock, “I was only joking about that!”
“Well,” Sara started. “Too bad, I’m making them bigger. Don’t worry I’ll only make them twice as big.”
You stared at your sister who was standing in front of your boob balls. “But then they’ll be two feet round!” You exclaimed. ‘At least I think they’ll be,’ you thought to yourself.
She shrugged, “Well too bad,” She said before she took aim at your right nut and pulled the trigger to make it grow. As it grew you could feel it fill with some sort of liquid but you figured that it was breast milk since you have breasts for balls. From her point of view she watched the first breasts expand slowly and your nut’s pink nipple started to grow out round.
As it grew you fell onto your back and started to pant, just slightly as your face went red. While you laid there your breast ball finally reached a foot and a half round. Your sister gazed right at your breast’s pink nipple to watch it grow as well. She held onto the trigger for another few minutes before she let go of the trigger to see that your right nut was twice as large. But she stared for a minute right at your right breast ball as your areola was six inches wide with the pink nipple was about half as wide and two inches tall.
The feeling of having one nut larger than the other was completely weird, but the unusual feeling went away when your sister took aim once again, this time hitting your left breast ball. This time like your right nut you felt it expand while it filled up with breast milk. You continued to pant while your twin smirked at your growing nut. “You really must be enjoying this,” She teased as your breast reached past a foot and a half feet round.
“That isn’t funny,” You retorted back at her.
“Yes it is,” Sarah laughed as she finally let go of the trigger to have your second breast ball to same size as the other, two feet round. She then slipped to the left of the bed and put the Breastinator on your computer desk. She then walked around to look straight back at you to take one final looked at your breast nuts. For one both of your nipples on your balls was thick and matching.
Taking a minute you collected yourself before you pulled yourself up. Looking down you finally got a solid look at your bigger breastified privates. Slipping off of the bed you stood up tall with her now giant breast nuts almost touching the ground. You then stepped over to the right to pick up gun from the deck that sat next to the draw in the lower left corner of your room.
Right as you pick it up saw your sister walk out.