David Dobrik flew to Las Vegas to put $20,000 of his friend's money on black and won for 'like the fifth or sixth' time in a row

David Dobrik / YouTube YouTuber David Dobrik and the Vlog Squad flew to Las Vegas to bet $20,000 on black — and won. In Dobrik's latest vlog, he talked to his friend Jeff Wittek about him wanting to bet money on one color, and Wittek asked him how long his winning streak was. "Myself?" Dobrik asked. "I haven't lost." "Let's go have a little fun," Wittek said and agreed to front up $20,000 of his own money. "I don't want to f--- up your lucky streak because it's insane ... It's got to come to a...