You offer your assistance

Hmm..." you say thoughtfully. "Why don't you let me do it for you?"

"Erm... I'm not sure, Joy." replies Mr. Cleft cautiously. "Would you know what to do?"

"Well I don't have much experience handling big tools like yours, but I'll give it a go." you continue. "And you can always give me some advice if I'm doing it wrong."

OK then." agreed Mr. Cleft against his judgement. "If you stand in front of me you should be able to reach it."

Trying your best to hide your devious smile you step forward and stand as close to Mr. Cleft as you can. Bending over causing your short skirt to once again rise up and press your bare ass against the older man's crotch, you reach forward.

"I can feel it." you announce.

"OK, Joy. Here's the tool."

"Oh my! Your big tool is quite heavy." you say in a tone somewhere between sweet and seductive. "But don't worry, I can handle it."

Reaching forward with the instrument you put it into position as Mr. Cleft gives directions.

"I've got your tool where you want it." you say after a fair bit of wiggling. Mr. Cleft's lump was still pressed against your rear throughout this.

"OK, Joy." said Mr. Cleft with a slightly cracked voice. "Start to pull it towards you."

You do as the older man instructs and start tugging away as hard as you can on the device. With your ass still up tight to Mr. Cleft's crotch it means ever thrust of your young body bangs you back into him and his straining bulge.

"I think its working, Mr. Cleft." you say between cute grunts. "I can feel it tightening!"

"...mmmmm..."

Mr. Cleft can barely respond as your perfect ass bounces against his erection. Instinctively his hands move up and take a firm hold around your waist. He's in a perfect position to take you from behind right now, with only his tighty-whiteys stopping him. And if they weren't there he would be right now. It was all he could do to resist pulling them down and giving you his full attention.