Jeff wants the Stranger

It looks like Karen will need a little more work, so you just root her to the spot, while focusing a little on Jeff.

"Wow, he's hot..." Jeff mutters, one hand lightly stroking his already semi erect cock through his trousers.

Karen turns to him, eyes wide. "What the fuck, Jeffery? What do you mean 'he'?"

He doesn't reply, but takes a few steps forwards, reaching the edge of the desk and Beth is ready to greet him with a smile. "Let's see it then big boy," she says coolly, her hand running across his crotch for a moment, before letting go, allowing Jeff to fumble with his fly, reaching inside and pulling out his penis.

"Jeffery!" Karen practically screams, looking at him in total shock, stroking his cock at beside the desk.

Beth slides in behind him, wrapping her arms around his waist and jerking him off from behind, pushing him forward a couple more steps before he's literally right next to the Stranger.

As the two of them reach him, Beth circles again, standing behind the Stranger now, forcing him down onto his knees, his head almost directly in front of Jeff cock. Beth moves around Jeff again, watching as the Stranger slowly parts his lips, reaching out and guiding Jeff's cock into his mouth. As Beth slowly pulls off more of Jeff's clothing, she turns to look over at Karen once more. "Are you sure you don't want to get involved?"