It was Teddy Pearson's first birthday, but he didn't like the cake and seemed oblivious to the baseball-themed decorations, including his "Rookie of the Year" high chair. Video shows the moment the Florida baby couldn't take anymore: when everyone sang "Happy Birthday" to him."He was overwhelmed," his mom, Monica Pearson, said. "He had just had it." While other kids check out of their own birthdays due to exhaustion, Teddy seemed to be trying to block out all the birthday attention. "I feel like he's just a grumpy old man who's been reincarnated," Monica Pearson said. Based on Teddy's reactions to the birthday song and other experiences, parents have created an Instagram account called "TeddyUnimpressed." "He's just got this very unimpressed look on his face at all times," said Teddy's dad, Collin Pearson. After going viral, Teddy has become a hero to millions of birthday-hating introverts who say they relate to the baby's avoidance of attention.Watch the video above to see more of Teddy's story.