Marlon Wayans didn't wait for a photog to finish his question before UNLOADING on Blac Chyna and Rob Kardashian.
We caught up with the comedian at LAX who roasted the parents-to-be, poking fun at Blac Chyna's baby bump and her ass. Check out the video ... Marlon had a bunch of Kardashian material ready, and gave us his greatest hits.
And when Lamar Odom's drinking came up, Marlon had something for him too.
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