In the episode "court date." Doug and Carrie are discussing Carrie going on a date with the police officer that gave her a traffic ticket. Carrie says to Doug, "can we really do that?" Doug replies, "of course we can, Leah you're an attractive woman." Calling her Leah(which is her real name)instead of Carrie. He says Leah kind of quiet but when you really listen for it, it's there.