Last night he was shooting shit up like O-Dog
from Chief Keef (Ft. 50 Cent & Wiz Khalifa) – Hate Bein' Sober Lyrics 1 on Rap Genius
Meaning
Continuing the double entendre from the last line. Last night, Fredo was shooting the aforementioned Cobra recklessly, much like the character O-Dog from Menace II Society

And he was also taking shots of the Cobra Malt liquor
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