Wedge me in a door and call me Ginger

English colloquial turn of phrase regarding great, unexplainable miraculous events.

Exclamation of surprise when confronted with an astounding occurrence.

I say, Chalmers old bean, did you see that Jerry airship just explode?

Well wedge me in a door and call me Ginger, Asquith, jolly good show. What? Mind you, shame that the chap from the Royal Flying Corps didn't bail out before the fireball got him ...