He was just caught by surprise, but Susan's determined

Jack tried to get his arms under Susan's legs to break the scissor but he couldn't. He grabbed at her arms but his hands just slid in the oil. He couldn't bridge because she had her legs behind his back.

So he grabbed her hair.

"Eep!"

"Urk!"

Susan squeaked, it sounded more like delight than pain. Her legs tightened around him, making him grunt. He pulled her head off his dick, but she just switched to a handjob. It wasn't quite as good as her blowjob, and anyway, she pulled herself loose and went straight back down on his dick.

Then he remembered the rope around her breasts. If it tied in her back... it did. He grabbed the rope and pulled. Susan was pulled upwards so she was sitting on his belly. WIth the rope in his hands he had better leverage and the grip on her scissor hold broke.

But as soon as it did, she grabbed the rope and twisted it so she slid out of it. She spun around to face Jack, and immediately slid down his body, going right back after his dick. He was just barely able to get his hands on her hair in time to stop her.

"What the fuck?" he muttered.

"The one thing Amber can't give me is a fucking real dick." Susan made another effort to get at him.