Here bai give's a fuckin feg's definitions

NB

Used in text or messaging among people from Northern Ireland, it stands for No Bother pronounced as "No Baw" it's used in similarly to how "no problem" or "no sweat" is used.

Person 1: "You in the burn tonight then"
Person 2 :"Not tonight lad I've got work"
Person 1:"NB"

by Here bai give's a fuckin feg July 30, 2019