to have a field day
to have a very pleasurable time
TRANSLATION
have a field day = einen Mordsspaß (Heidenspaß) haben — auch = ein Freudenfest; Sportfest; Wandertag; Schulwandertag; Manöver; Truppenparade (mil.)
STATISTICS
IN THE PRESS
“Britain’s newspapers HAVE A FIELD DAY with this week’s Brexit chaos.”
CNN Business