Have I Been Good?

So I was listening to "Brave New Town", one of the new Eight/Lucie audios. Thre's a line where the eighth Doctor says "I think its time we paid a call at the local news agents.", to which Lucie replies (ridiculously excited) "Sherbert fountain?". The Doctor responds in what I consider to be a very flirty voice, "Only if you're good."

Which got ME thinking: "What ELSE does Lucie only get if she's good...?"


I have a dirty, dirt mind. I know. Shut up.