Wallad is a slang word that originates from South London.
The word 'wallad' is originally from the Arabic language, meaning: child, boy, kid, son or youngster.
Calling someone a wallad is a deep insult.
A: If you're not careful, my gang will shoot you.
B: I'm not scared, your gang is full of Wallads.
A wallad is a word for someone who has actually fucked up in the most idiotic way ever.
Usually used in quite a jokey manner.
"He just accidently used preperation H instead of his toothpaste., What a wallad."