teasers
n. 戲弄者,喜歡戲弄別人的人( teaser的名詞複數 )
A teaser is a difficult question, especially one in a competition.
A teaser is someone who makes fun of people in a slightly cruel way.
Those case studies of Frank's were real teasers?
弗蘭克提出的那些案例的確棘手.