蟑螂不叫蟑螂－叫小强？
zhang lang bu jiao zhang lang - jiao xiao qiang
This is a common online phrase or word that people use. In a way, it is a slang that is adopted by some on the internet although they do not necessarily mean anything. The word 蟑螂 means cockroaches. However, a common online word referring to cockroaches uses the words ' 小强'. In a way, this does not mean anything but it is actually a cute name.
Therefore, this is usually used when one person calls someone else a cockroach but in a joking manner, then they would use 小强.
Example:
"别想小强烦人！“
bie xiang xiao qiang fan ren!
which means "don't act like a cockroach and annoy people!"