Something you can say at any time and is an evolved form of oof. Diab means dab which is used to further enhance the oof.
This is the perfect thing to respond to a funny joke or a serious event.
It doesn't have to make sense, just like how you can say oof at any given time.
Example 1. Joe: Dude my cat just died...
Ivar: Ouf diab
Example 2. Philip: You're gay
Felix: Ouf diab
Example 3. Wife: I want a divorce
You: :(
Random guy through the window: Ouf diab
Example 4. Bully: Gimmie your lunch money
You: Ouf diab
Bully: Oh
by Fejlanoof December 24, 2018
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