How odd! His forehead knitted slightly as he wondered if it wasn't that then what could it possibly be! But he didn't ask, instead he dodged sideways, brightening to tease the lady he sat with.

"Oh, but you must have done!? I can't have avoided drinking anything whenever you were around? That would be silly!"

Of course when his 'malt' arrived it was one slightly different than Rose might have been expecting. It was a very pretty chocolate malted milkshake and the Doctor took a long thoroughly impish sip from it as Rose watched knowing full well she had been thinking it would be something alcoholic.

"I wouldn't have minded a banana smoothie, those do some rather nice."