DEREK: "Meredith, I am so sorry. Addison. What are you doing here?"
ADDISON: "Well you'd know if you'd bothered to return any one of my phone calls."
MEREDITH: [confused]
ADDISON: "Hi, I'm Addison Shepherd."
MEREDITH: "Shepherd?"
ADDISON: "And you must be the woman who's been screwing my husband."
MEREDITH: [silence]