expression
serves you right!; see what happens!
A gloating exclamation used when someone gets their comeuppance. Often used in a mocking or triumphant tone. The phrase is a contraction of 様を見ろ (ざまをみろ), literally 'look at your state'.
See also: 様を見ろ
ざま見ろ！だから言ったじゃないか。
Serves you right! I told you so.
彼が失敗してざまみろと思った。
When he failed, I thought 'serves him right'.
The full, uncontracted form of ざまみろ. It is more literal and less common in modern casual speech.
Contraction of the phrase 様を見ろ (ざまをみろ), literally 'look at your state/appearance'. The expression is used to mock someone's misfortune.