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You come into my room and tell me that you've bought me a gift. I'm very suspicious since this isn't the kind of thing that you would normally do, but you tell me that you're serious and you give me a small package. I open it up to find some chest cream. I find it a little odd that it's from you, but trying to be polite I open it up and give it a smell. I'm pleasantly surprised to find that it smells amazing and I begin to rub some onto my chest, asking you to turn around. You begin to look nervous as I smear it onto my skin. "What do you mean, I'm only supposed to use a small amount at a time?" I ask. "What's the big deal??" A few moments later and it hits me. I can feel my skin stretching and my chest begins to expand!! I let out a scream and boom... suddenly my breasts have grown to a gigantic size!!! In fact, they are so big that I'm completely stuck by them and I can no longer move or sit myself fully upright! "Help me Stepbrother... what did you do to me???" This was your plan the whole time of course and instead of helping me, you begin to unzip... aware that I'm now completely stuck by my huge breasts...