你拿黄瓜当神器
[nĭ ná huáng guā dāng shén qì]
This nickname 'Using cucumber as a weapon' humorously describes someone pretending something ordinary (like a cucumber) to be an extraordinary tool, possibly indicating naivety or creativity. In many cases, it suggests the person uses things not in a usual way but in a unique way which could seem absurd to others.