The phrase "juq897 jangan sampai suami tahu kalau mertua lebih new" is a combination of a video identifier code and a Indonesian sentence that typically describes a common trope in adult-themed drama or "netorare" (NTR) storytelling.
"mertua" means "parent-in-law" or more specifically, it can refer to either the mother-in-law or father-in-law. juq897 jangan sampai suami tahu kalau mertua lebih new
Masukkan barang mewah ke tas belanja pasar. The phrase "juq897 jangan sampai suami tahu kalau
So, if we put it all together, the phrase seems to suggest: "Don't let your husband know that his parent-in-law (or you) is cooler or more modern than expected." if we put it all together