Oh, my giddy aunt
From Tardis Wiki, the free Doctor Who reference
"Oh, my giddy aunt" is a colloquialism that is often used as an exclamation of surprise.
The Brigadier said this when he found out that Professor Rubeish was missing. (TV: The Time Warrior)
The Second Doctor said this to Dastari during an argument in the cellar. (TV: The Two Doctors)
The Second Doctor said this when surprised by a Kroton. (TV: The Krotons)
Missy said this to Clara while they are on a plane. (TV: Death in Heaven)
