How exaggerated was Don Vito?

Hey all, Big fan of Viva La Bam, Just curious as too how genuine Don Vito was during Viva La Bam and other CKY/Bam Margera shows and films, I understand VLB much like other reality shows have "scripted" and exaggerated moments for the camera, But how genuine was Don Vito? Is his freak outs and mumble speech a genuine thing he would do or would he just play it up for the camera?