你和小三要跳楼我在楼下喊加油
[nĭ hé xiăo sān yào tiào lóu wŏ zài lóu xià hăn jiā yóu]
You and your third party jump off a building, I stand under to cheer you on. A sarcastic name mocking people who have affairs while married, showing that someone would just spectate rather than intervene. It's a humorous expression that also expresses indifference toward others' affairs.