[contentcards url=”https://nypost.com/2024/10/01/us-news/tim-walz-staggered-by-cool-jd-vance-admits-im-a-knucklehead-during-genial-vp-debate/” target=”_blank”] By Steven Nelson Minnesota Democratic Gov. Tim Walz stunned watchers of Tuesday night’s vice presidential debate as he nervously fidgeted, frowned and even called himself…