Use an Ona-Hole to test how sensitive she is.

Sophie settles back down, looking nearly terrified. You lean towards your purse, and rummage around for a second, before pulling out a fleshy cylinder.

"This is a pocket pussy Sophie. You will be taking the test with it covering your penis. Now, mommy needs you not to hump your little penis into the pocket pussy, okay? No matter how warm it is or how good it feels, no humping, got it? Just let mommy do all the work." Sophie nods and lays back into your large chest.

"Yes mommy." You smile lovingly, placing the tip of the pocket pussy onto Sophie's sensitive tip. She shivers a little, her eyelashes fluttering from the stimulation.

"Now, are you ready for mommy to start?" You ask gently. Sophie nods her head, determined to do her best for her mommy.

"Yes mommy, I'm ready. I'll be such a good girl!"