To be mentioned in the same paragraph in print with these people is mind-boggling to me.
Seaman's mind-boggling dereliction of responsibility harms the state whose interests he was, and is, tasked with protecting.
For Walters, who worked at 1600 Pennsylvania Avenue for 37 years all told, the whole escapade is mind-boggling.
So astonishing or complex as to overwhelm the mind: The school problem is absolutely mind-boggling
[1964+; boggle, ''to be disablingly frightened, take alarm,'' is found by 1598; a bogle or boggle was a spook that horses were reputed to see]