Most people know to sing "Happy Birthday" to time out their hand-washing, but in Dwayne "The Rock" Johnson's house, they sing "Moana" songs. On Instagram, he rapped his portion of "You're Welcome ...

MORE: Dwayne Johnson sends message singing 'Moana' song to 3-year-old battling leukemia "I was the boy sitting in the seats, watching and adoring you, my hero from afar," he continued.

Meanwhile, Johnson's next big movie, 'The Smashing Machine,' is set to release in October, according to People. Dwayne Johnson Remembers An Emotional Significance In Jelly Roll's Song 'Only', Says ...