台Taivo A Taiwan Mandarin dictionary

碰釘子

pèngdīngzi

ㄆㄥˋ ㄉㄧㄥ ˙ㄗ

Simplified 碰钉子

Example

這個人只顧自己，不顧別人，你要他幫忙，準得碰釘子。

zhège rén zhǐgù zìjǐ búgù biéren nǐ yào tā bāngmáng zhǔn de pèngdīngzi

This person only thinks about themselves and doesn’t consider others. If you ask for their help, you’re bound to run into trouble.

Keep 碰釘子 and it comes back until you know it.