A funny video has emerged of a three-year-old boy unable to contain his excitement as he sees a train for the first time. br br The footage, shot on May 8 in Beltsville, MD, USA, shows Graham raising his arms in the air screaming: "Wow! Wow! Wow!" while his twin sister Ellie is left speechless.br br "Graham LOVES trains and that was the first time he’d seen a real train and I just happen to be coming up to the railroad crossing and here comes a train," his mother told Newsflare. br br "So I rolled down the windows and start videoing because I knew he was going to freak out," she added.