Wut it do? Wut it don't?
Wut it is? Wut is up? Wut is wut?
Wut it do? Wut it don't?

from LE1F – Wut Lyrics on Rap Genius

Meaning

Asking ‘what’s up’ in many slang terms to the point of frustration and eventually basically asking ‘What is it?!"

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