You stand there, feeling the odd sensation of your new breasts rubbing the T shirt you put on. Your nipples, newly grown sensitive feel odd under it, and as you move your hands to touch them, a rippling sensation of pleasure goes up your body.
As your crotch in particular starts to warm up, you massage your new large breasts, fondeling them. The chase from your brother left you feeling tired and excited. A low moan escapes your throat, unbidden as you touch and twist your nipples.
"I hear you in there!" Sounds your brothers voice. Gasping you look up at the door. You stare at the door, waiting. For a while nothing happens. You guess he...
BANG!
Your eyes open wide, your chest heaving in stark panic at the door shaking. Shirley he can't break through, you think to yourself.
BANG!
The door bursts open, reveling your new big brother, in all his glory, cock hanging out to see.