Let's face it, the Tenth Doctor wasn't the only one asking this when a mysterious woman appeared in the console room wearing a wedding dress, and then again exactly a year later when the Titanic crashed through the TARDIS walls. Only on Doctor Who, eh? Just imagine what they'd have been shouting if it was in Torchwood. God forbid.
Dan Butler is the Doctor Who Editor at WhatCulture.com. When he isn't writing his own articles or editing other people's, he can be found trawling the internet for gifs of Steven Moffat laughing. Contact him via dan.butler@whatculture.co.uk.