Well Red
Keira is relaxing reading her book wearing a very short red skirt. As she reads she exposes a glimpse of her panties. She can see you looking as she reads, so she opens her legs a little more and the more you see, the harder you get. As she is teasing you with flashes of her panties, she tells you to get your cock out and wank for her.
As you wank Keira gets more and more exited, she takes off the panties and spreads herself open for you, she loves how horny it makes you so she fingers herself as she watches you wank.