She needs to go out with other horny women who will lead her astray, and together they can invent ways "in the moment" of how to turn men on. Yes sir, no panties and her thighs moving open/shut slowly can tease guys who are sitting far enough away to see her pubic hair at the entrance to her love tunnel cave.
If she flashed for an older man, he might find his face suddenly going red, or just fidgiting around to try and hide his curious eyes and dirty mind.
When a girl flashes an older man by letting him see her pubic hair, it will probably be the most exciting thing that has happened to him for a very long time. If he was thinking about stepping in front of a bus to end his disappointments in life, he may now reconsider because he now knows that she can help him find pussy (either hers, or she ring up one of her friends).