Get on the bus, this is going to be exciting.

Donna could feel her nether regions moisten up as she decided to get on the bus, first confronted with the bus driver, an old man who seemed barely able to see the road, and so old he was already spent to take interest in the nubile bodies of the teenagers piling into his bus, she found a spot on the bus immediately.

Donna, now invigorated by the attention she was obviously getting (the shirt was not that long, and people were wise to the sort of thing she'd get into), and the thrill of possibly being exposed, both literally and metaphorically, she took a seat that was somewhat visible, an did have an other seat next to it, but at that point, Donna didn't care much beyond taking advantage of the situation she'd been handed so beautifully.

"Donna?" Before Donna could consider what to do with her situation, she heard her best friend, Buffy, say her name "why are you on a bus? I thought you had a car?"

Donna turned to see Buffy, who, by the look of it, was already answering her own question.

"It's in the shop today." Donna replied as Buffy sat down next to her.

"Are you-... Is this on purpose?" Buffy asked, trying to be discrete.

"Yes, and no, in that order." Donna answered, she lifted up the shirt just high enough for Buffy to see her bare crotch "I woke up late and forgot to actually get dressed."

"Considering how often you're naked, I'm not surprised you didn't notice." Buffy giggled, and Donna found herself blushing, not on account of her nudity, but on account of the jab at her absent-mindedness.