MBTA vs. Subway
DISCLAIMER: I own nothing, BTVS belongs to Joss Whedon.
Buffy scratched her head in confusion as she looked at the door in front of her. Faith had given her explicit directions, but Buffy found herself standing outside of a sandwich shop. Faith must have not understood what she was asking for.
“Excuse me,” Buffy asked a passerby, “Where is the nearest Subway?”
The man looked at her strangely, “Your standing in front of it.” He then shook his head, and walked away muttering about damn tourists.
Meanwhile down the road a bit Faith cackled like a hyena. Eventually she'd go help out B, but for now it was entertaining.
Moral: The train that goes underground is called the T. Subway is a sandwich shop.
So yeah, not really a crossover, but I'm working on it. And fooling around with Buffy's mind is just too much fun.
Oh and for those of you curious, the couple on the Charles River were Clementine and Patrick from Eternal Sunshine of a Spotless Mind