Lisa just can't seem to get any peace or quiet

Another day, another bus ride. Lisa felt apprehensive as she boarded her usual route - yesterday she managed to miss her stop for the first time. Must have zoned out or something. She promised herself she'll be more attentive this time as she started walking to the back of the bus.

The familiar sight of the officey-looking brunette greeted her once again as she reached her destination. Is this her regular commute? Is she some kind of intern at one of the law firms around here? Is 'officey' even a real word? Lisa decided to voice none of these questions out loud and proceeded to plant herself firmly in the girl's lap, wrapping her legs around the girl's waist.

"Lisa right?" Her companion asked, putting a finger briefly inside Lisa's mouth. Lisa dutifully gave the finger a quick once over with her tongue, coating it in saliva, and the brunette pulled it out. "Yeah. And you're Kate."

Kate nodded. "Is this your regular route? You're working around here?"

"Yes, at the dental clinic." Was the answer. Lisa decided to prevent this conversation going any further. "Sorry, I don't really feel like talking - I get motion sick riding these things."

That wasn't exactly the truth - Lisa never got motion sick in her life, as far as she knew, but she didn't want to be more rude than necessary. And it worked - Kate gave her a small nod of understanding and didn't press the issue. Instead, she simply took the finger, moist from before, and gently snuck it down Lisa's panties. The finger started going in circles around her clit and she let out a sharp exhalation.

Over the next few minutes the rumble of the bus engine underneath, the finger inside her panties, and the sweet smell of strawberries from her companion were combined to increase Lisa's arousal beyond what was normally experienced on public buses; She was breathing heavily with an open mouth and closed eyes as Kate continued her merciless teasing with a mischievous look on her face.

Once or twice, Kate pulled her finger out and brought it up to her lips, savoring her playmate's juices. At these moments, Lisa felt a bit apprehensive - but the finger quickly returned, gently going inside her again and again. Finally, she couldn't take this anymore, and with a loud moan began grinding her crotch against Kate's lap.

She could feel the orgasm approaching - she wasn't a foreigner to the sensation despite not experiencing it as often as she might like. Her hips buckled harder and harder against the brunette as she tried to get every inch of finger she could to penetrate her. She drew in a sharp breath, preparing for the coming climax - and then it stopped.

Kate lightly nudged Lisa off her lap, gently settling the girl into an adjacent free seat. Her traveling companion looked completely deflated and disappointed as she sat there, trying to catch her breath and waiting for her heart to slow down to normal. "This is my stop, maybe we'll talk again tommorow?"