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Seriously; to reference something being accurate or on point.
Used similarly to the term 'real talk'
Believed to have originated in some Harlem neighborhoods in NYC as an evolution of the term 'deadass' which is used in the same way.
"The song that's playing is ILL!"
"You had to be there, man! That guy was like the Hulk, deacheeks!"
by TuAlma MeLLama August 17, 2011
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