"But why? Why would Diane be at the mall? With her boyfriend? And her other friend? And her friend's boyfriend? In some manner of double date configuration? AND WHY WITH THE PRETZELS?!
Diane's good with mysteries! Maybe I should ask her about--Oh. Right."
The specific reason why Lucy doesn't get along with Rhoda is something I've had in mind since late 2004. Almost 12 years later, a character has actually acknowledged there's tension between them! PROGRESS!