The father is a character from asdfmovie10. He is seen holding a baby explaining it's the happiest day of his life. Someone sings "If You're Happy and You Know It". When he claps his hands, he accidentally lets him go, shocking him.
Father: My beautiful baby! This is the happiest day of my life!
Lady: ♪ If you're happy and you know it, clap your hands ♪
[The father claps while the baby starts falling. He is shocked when he notices the baby fell.]