"You know," says Darlink Sister, "I always used to think the words were 'please don't ask how I've been getting on' ."
"What? They are - aren't they?"
"No, it's actually - " Please don't ask me how I've been getting off."
Cue one quiet contemplation of the next chorus.
"Well, that sorta changes the interpretation."
"Yep. Does rather..."