pineapple 是菠萝的意思，而有个短语 the rough end of the pineapple 则是指 “受到不公平的待遇” 或者 “很倒霉的那个人” 。

【例句】
He felt discouraged due to receiving the rough end of the pineapple.
他因受到不公平的待遇而感到沮丧。

He is always getting the rough end of the pineapple.
他总是最倒霉的那个。