Rose Tyler: I meant to phone, I really did. I just… I forgot.
Jackie Tyler: For a year? You forgot for a year, and I’m left sitting here?! I just don’t believe you! Why won’t you tell me where you’ve been?
Doctor: Actually, it’s my fault. I sort of… employed Rose as my companion.
Policeman: When you say companion, is this a sexual relationship?
Doctor and Rose (at the same time): No!
Jackie Tyler: Then what is it? Because you…! You waltz in here, all charm and smiles, and the next thing I know, she vanishes off the face of the Earth! How old are you then, 40, 45? What, did you find her on the Internet, go online and pretend you’re a doctor?
Doctor: I am a doctor.
Jackie Tyler: Prove it. Stitch this, mate. (slaps him)
From Doctor Who – Season 1 Episode 4: ‘Aliens of London’ (1×04)
