Michael Strahan has a trademark tooth gap that he's incredibly proud of, and recently played an epic April Fool's joke on his fans by pretending he had altered his smile.MORE: Robin Roberts and Michael Strahan are friendship goals in must-see videoThe Good Morning America star's tooth gap has reappeared once again on social media, as Michael posted a fun photo of himself on his 40th birthday with a cake featuring his smile.The birthday cake consisted of a football and Michael's smile, and the