Half & Half: The Big Mothers for Others Episode

Dee Dee gets Mona, Spencer, and Adam to help her out on a charity telethon during Mother's Day, but when Big Dee Dee decides to include herself and becomes unbearable, Phyllis reveals to all that Dee Dee was born out of wedlock, a fact of which Dee Dee was previously unaware. Phyllis' inability to keep a secret also causes some friction between her and Mona.