Donovan Mitchell lost his train of thought during his postgame interview on Thursday ... and it was all thanks to Darius Garland breaking out in song.
The hilarious interaction went down after the Cleveland Cavaliers secured a 110-97 road win over the Brooklyn Nets ... when Spida was trying to weigh in on Evan Mobley's impressive outing -- but Garland had other plans.
During Mitchell's response, Garland was heard in the background jamming to Drake and PARTYNEXTDOOR's "Gimme A Hug" .