Make her sit on your lap.

She moves to sit on his lap, with her back to him.
John 's hands grab her waist and pull her closer to rub him.

His fingers lift slightly her dress behind, enough so her bare bottom is touching his lap.
His other hand pulls his hard cock underneath her.
She bends slightly forward to ease penetration the beam of light over the table shinning on her cleavage.
His hand grabs her bare shoulder to pull her down.
Another guy watches.
His other hand caresses her chin and his thumb is in her mouth, which she bites.
Two sexy girls in dark makeup watch them.
Her eyes are closed and her mouth is opened.
Her tits bouncing slightly.
Strobbing orgasmic lights? :)