An appropriate exclamation when events unexpectedly turn for the worse.
This phrase supposedly came around when a eastern-european prostitute was orally pleasing a male client at a bachelor party.
After tasting the (obviously lacking in personal hygiene) client's member she loudly exclaimed ''Gorki kurac!'', meaning ''bitter cock''. The term stuck and can often be heard either in it's original or anglicized form in the Northern Hampshire area.