During Papa Roach’s January 18 show at the Ace Of Spades in Sacramento, CA, the group were joined onstage by frontman Jacoby Shaddix‘s young son Brixton. You can see footage of him performing “Traumatic” with the band below: It doesn't get cuter than Jacoby's son (Brixton) performing Traumatic with us 😅 😍 pic.twitter.com/JPRvQl8yZa — Papa…