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It's called Macaroni Time -- because Chief Keef cuts the cheese.
The 18-year-old rapper was checking out a new app earlier today called Hang w/ -- which lets users watch live video of their friends -- when he turned his weapon of ass destruction on his unsuspecting, pregnant baby mama.
The fart itself is pretty impressive -- a cross between a leaky balloon and a baby elephant -- but Keef's girl is NOT impressed. The fallout is hilarious.
Check it out.
See also

Chief Keef -- Out Of Rehab and Chicago ... Hello, California!!

Chief Keef -- Sued For Screwing Over Breast Cancer Charity

Chief Keef -- I'm WAY Too Famous for Malibu Rehab
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