Nicki Minaj: Meek Doesn't Do Drugs ... His Pee is Just Deceiving

Nicki Minaj was way more than a ride-or-die chick when she took the stand Thursday on his behalf ... she also vouched for a curious, bizarre drug test her boyfriend failed.

Meek Mill was in court on a probation violation in his drug and gun case. As we reported, he left town without getting court permission, but it turns out there was a lot more he allegedly did.

According to legal docs, during a drug test Meek handed the lab tech a specimen that turned out to be cold water. Meek allegedly told the tech it looked that way because he had just consumed a lot of water, adding he was a bodybuilder and drank protein shakes that make his pee appear that way.

Nicki testified that Meek was telling the truth about his drug test, and said if she knew the protein shakes would make his urine appear like water, she would not have let him drink it.

And Nicki insisted to the judge, Meek doesn't do drugs and did not fake the test.