A commonly used word in
Ireland referring mostly to teens who think they're the
shit for drinking and smoking and getting up to other teenage shenanigans. Spoof of the word 'mad' meaning 'crazy'. A person who does 'shmad'
stuff is called a 'shmadster'.
Little rascals...
Boy 1: Ye goin
gaff party tehnoih?
(i.e - Are you going to the house party tonight?)
Boy 2: Nahh goin field wihh dahh m8s, guna geh smashed coz we r 'shmad' loike!
(i.e - No, I am going to a field with my
friends, I
will be getting severely drunk because I am 'shmad' like.)