heads or tails
成語所屬單字tail
heads or tails — 慣用語
1. used when asking which side of a coin will face upward after it is tossed, as a
1.慣用語
釋義
正面還是反面（擲硬幣決定）
used when asking which side of a coin will face upward after it is tossed, as a way of deciding something by chance
例句
Zuri asked, "Heads or tails?" before flipping the coin to decide who would go first.
They settled the argument with a quick game of heads or tails.