go south and head south
Theme: ESCAPE
in. to make an escape; to disappear.Lefty went south the minute he got out of the pen.The mugger headed south just after the crime.
Theme: FALL
in. to fall; to go down.All the stock market indexes went south today.The market headed south today at the opening bell.
Theme: QUIT
in. to quit; to drop out of sight.Fred got discouraged and went south. I think he gave up football permanently.After pulling the bank job, Max went south for a few months.