Waiting for a train home today, ds (4) and I got chatting about Dr Who (I had been trying to get him out of the London Transport Museum for the best part of an hour by hissing 'We will miss Doctor Who if we don't go leave right now' in my best threatening-yet-not-notifiable-to-Social-Services voice).
I told ds the doctor would have a new companion and asked if he remembered who Donna was. Guy on the next seat to us was pissing himself laughing when ds piped up 'I know, it's Am-I-Bovvered, face-bovvered, bovvered, face, lady'.