Did you know Patrick Mahomes is a great quarterback AND sick hype man?!?!
It's true -- 'cause the Kansas City Chiefs star took the stage at a Kane Brown show Thursday night ... and his antics had fans losing their minds!!!
Mahomes and his fiancee, Brittany Matthews, hit up the country concert in Kansas City for a date night one day before Patrick's 26th birthday ... and at one point during the evening, the signal-caller was pulled on stage.
And, it didn't take long for him to get the audience into the show .