Coca sek is an Indonesian word that means "cocaine". Due to the illegal nature of the substance, there are many euphemisms and synonyms for it. Some common synonyms that are used include "yeyo", "blow", "snow", "white", and "coke". These terms are often used in drug culture to refer to cocaine. However, it is important to note that the use and distribution of cocaine is illegal in many countries. It can cause addiction, health problems, and contribute to violent crime. It is recommended to avoid using or sharing these terms and to seek help if struggling with cocaine use.