zhuang means to act; pretend in CHinese, and Bi means pussy. But, when u combine them it means to act tough or act like the "pros" in games or some shit....
It's Chinese English. In Chinese, 'Zhuang' means 'play'. 'Bi' is 'pussy' in English. Literally 'zhuangbility' means 'to play pussy' or 'state or action of playing pussy'.
Zhuangbility means 'to boast' or somewhat in English.
Many people think they are full of niubility, and like to play zhuangbility, which only reflect their shability.