When Janice comes into the coffee shop to talk to Chandler, she brings a shopping bag which she sets by the couch. But when she gets back from the restroom and Phoebe breaks up with her for Chandler, she leaves the coffee shop without getting her bag from in front of the couch.
While talking with Angela in the restaurant restroom, Monica says, "My brother never even told me when he lost his virginity."
In the previous episode the following conversation happens:
Ross: "Today's the day Carol and I first consummated our physical relationship."
Joey: "You told your sister that?"
Ross: "Believe me, I told everyone!"