My giddy aunt British phrase
Did he really ask her out? Oh my giddy aunt!
Is it your first time getting an A on the test? Oh my giddy aunt!
To be surprised by some sudden occurrence
To greatly surprise, shock, or confuse someone
"Giddy" has been used from the first millennium to mean stupid or mad. The first use of "my giddy aunt" is supposed to be found in the late 1800s.
in any way at all
I will not accept it in any way, shape or form.