April fool
noun [ C usually singular ] uk/ˌeɪ.prəl ˈfuːl/ us/ˌeɪ.prəl ˈfuːl/
在愚人节开的玩笑;愚人节时受愚弄的人
a trick played on someone on April Fools' Day, or the person who is tricked
April fool
exclamation UK uk/ˌeɪ.prəl ˈfuːl/ us/ˌeɪ.prəl ˈfuːl/ (US April fools!)
(在愚人节愚弄别人后说的话) 上当啦!
said on April Fools' Day when you have tricked someone