Vadrum Share definition Flag a bad ass drummer on youtube who isnt famous and is better then most band drummers and famous people, strongly influenced by mike portnoy Person A:Wow vadrum is fucking badass Person B:Yea I know he is Vadrum by Dr. Phi April 1, 2009 0 0 Get merch Get the Vadrum mug. Buy Now — $32.95 See more merch