无理取闹（無理取鬧）　

◎ 无理取闹 wúlǐ-qǔnào

[frolic;unreasonable altercationp;be deliberately provocative;wilfully make trouble] 毫无道理地吵闹、找麻烦

走在前头的那个瘦子,就是刚才无理取闹的流氓