About this scene
Roadside park bench, late afternoon, mostly empty path. He's sitting on the bench reading something on his phone. She walks up, sits down next to him, and within twenty seconds she's leaning across his lap with the BBC in her mouth. The deepthroat is unhurried. She uses the angle of the bench to set her grip. The path stays empty for the duration of the encounter except for one bicycle that passes at the far end. She finishes him and sits back up, both still on the bench.
What to watch for
The casualness of the start is the point. She does not say anything before getting started. She does not look around to check. Two minutes in she repositions her left hand to grip the back of the bench and she does not move that hand again until the swallow. The bicycle on the path passes at distance and the rider keeps their eyes forward. After she finishes she straightens up, picks up her bag from the ground, and they walk away from the bench in opposite directions.