Exponential growth

Liz shudders as she feels the growth happening. It felt like everytime was exponential. Hannahs lips still pressed around her cockhead as she felt the lips get tighter and tighter around her until they were forced off.

Liz looks up... no forward to her brother. She was so used to looking up to him that she was confused at first. She was now staring straight forward and making eye contact with him.

Hannah, gasping for air quickly reaches for the tape measure. "I need to see for my own eyes!" She drags the tape down my flaccid monster. It was 22 inches long a moment ago. Now, while hanging down my knees, hannah exclaims—