"Wallah" is the Arabic way of saying "On God" as in "I swear".

"Say Wallah" can be used to actually question whether one's being honest or not, but that's not often the case, Most of the time it's just the Arabic way of saying "No shit?"
person1. bro, i just found out Axel's mother has cancer?
person2. Shiit. Say wallah?
person1. On god, man.

person1. EY bro i just realized its friday
person2. mhm, so?
person1. we don't got school tmr!!
person2. Say wallah? such a smart discovery you just made.
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A group of lords that pulls and girl they want with no hesitation because of their looks, resulting in other groups getting mad. They are the richest, best future, best looking, and most humble group.
Bro i’m tryna join Team Wallah so I can get my body count up
by Thisisajoke720 December 13, 2020
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A worker in an Indian tech-support scam boiler room, or in social media follower farm.
You may have plenty of twitter followers but they're mostly fakes created by some keyboard wallah in Bangalore.
by the real juju July 16, 2017
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In arabic meaning:
I swear on the quran (quran being the holy book, like bible for the christians)
wallah quran i completed that game in 3 secounds.
by Dixonsider March 7, 2016
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A person or group who never drink alcohol and are opposed to it. Pop means soda or soft drink. Wallah comes from Hindi –wālā, meaning person or people concerned with a particular matter. Pop Wallah is used by the British military in Irak and it refers to local teetotal folks.
- Pop wallah is having a party!
- That´s a real drinking problem.
by Chief Little Owen September 16, 2010
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Dunno what that means
Wallah Mucka!!!!
by PDX12 June 1, 2021
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