You have quite a knack for telling me when I look awful. Have you noticed that? [ Clara manages to eye him but he's also right. She doesn't answer the question though, not directly. ]

I'll sleep when you've come back. I can't miss my chance to let everyone know you're late when you inevitably are.

[ Shes hoping reverse psychology works on him or something, that the more she eggs him on about getting the timing off (which he has to admit happens frequently), the more punctual he'll be. ]