have a field day

US /hæv ə fiːld deɪ/
UK /hæv ə fiːld deɪ/
"have a field day" picture
1.

大做文章, 玩得痛快

to have an opportunity to do something enjoyable or to exploit a situation to one's advantage, often with negative connotations for others

:
The tabloids will have a field day with this scandal.
小報會藉著這個醜聞大做文章
When the teacher left the room, the students had a field day.
老師一離開教室,學生們就玩瘋了