Eli Manning was big drippin' when he hit the studio with Fivio Foreign on Tuesday ... and the 2x Super Bowl-winning QB even took shots with the NYC rapper!!
Fivio tweeted on Tuesday, "I’m goin to the studio w Eli Manning" -- then later posted a video with the former Giants QB and his old teammate and center, Shaun O'Hara, pouring shots.
It's unclear what sparked the unexpected linkup .