Carrie Underwood [1] just can't stop singing Mike Fisher's praises [2]. After showing her unwavering support for her husband's hockey team [3], the country singer wished him a happy 37th birthday complete with a ridiculously corny joke. "Happy birthday to this handsome hunk! I'll never forget the day he told me he was asked to wear the 'C.'" she wrote alongside a photo of Mike [4], holding up his captain's jersey for the Nashville Predators. "I was so proud on that day and I'm even more proud now to see him play in the #StanleyCupFinals. He's definitely the only FISH in the "C" for me! 💙💛🐟💛💙🐟💙💛" Get it? Fish-er. These two are so adorable.