Here at RTM, we're huge fans of David Dobrik and have featured him on the show many times. Well, he's back with another incredible act of generosity! He and his friends were in gambling in Las Vegas, and David quickly doubled $20,000 into $40,000. His luck paid off for his friend Mariah because he gifted her the money to help her family in their time of need. The generous surprise made her overwhelmed with emotion. Keep being awesome, David!