跳楼不怕那还有歪脖树呢
[tiào lóu bù pà nèi hái yŏu wāi bó shù ní]
This Chinese online name humorously suggests that if jumping off a building is not scary, there's always the option of hanging oneself from a crooked tree. It carries an exaggerated sarcastic tone, indicating that someone is very daring or has extreme thoughts.