Invite her onto your lap

"That was hot as sin," I told her honestly. "Now c'mere," I instructed, slapping my thigh as an invitation.

She balked. Sweaty and slightly out of breath, there was a visible reluctance to get within touching distance.

"I said, come here," I repeated. "There will not be a third chance."

Again slow-rolling her compliance, Nessa moved deliberately the remaining distance between us. Another hesitation as she positioned her hips above my lap. I resisted the urge to grab her hips and "help" her down. I was enjoying her visible cringe too much.

At last I felt her perky bottom compress onto the contours of my groin and thighs. I seized her waist with both hands now. I let out a groan of pleasure as I shifted my hips, grinding her youthful ass against me.

"Gross." I heard her mutter.

Ignoring that outburst, I kept grinding on her. It was a great feeling. Maybe too great. I could feel a nut coming, but I wasn't done yet.