Take teh cougar by the neck

You slip from her grip, and push her up against the glass, turning her around so that you can slide your hand down under her tight ass, fingering her gloriously hot and slick pussy. With water streaming down over her you finger her slowly, and at first she just coos and encourages you, but as the minutes wind on she starts pushing with her shoulders, trying to get away. You intensify your efforts and soon you bring her off on your fingers. She shudders and groans, and you pull her back so she can lean on the glass, as you slide your massive cock into her from behind, gripping her hips to control her, driving into her, deeply, hard, and soon she is shuddering in another powerful orgasm.

As much as you love being in control over this older woman her body is magnificent, and she is wearing you down, and fast. Soon you won't be able to hold it anymore, and her snatch is demanding its tribute.