Nuh muss is an expression used to show confidence in knowing something or the ability to do something
Expression of sertenty.
Patois: "Yuh bredda know how fi fix di wata pipe" "Im nuh muss know how fi fix ih".
English: "Does your brother know how to fix the water pipe" "Of course he knows how to fix it."
Patois: "Yuh know mi sistah" "Mi nuh muss know yuh sistah, wi did guh skool togedda"
English: "Do you know my sister" "Of course I know your sister, we went to school together"