"Excuse me, please press the button."
This lesson reminds me of a song from my childhood.
"Hello! My name is Joe! I have a house, a dog, and a family. And I work in a button factory! He said, 'Hey, Joe! Are you busy?' I said 'No.' 'So start pressing this button with your right hand.'"
This continues for several verses until Joe is pressing buttons with both hands, feet, and his head. Finally, Joe answers the question of "Are you busy?" with a resounding "YES!" Of course, after each verse, the ones singing the song have to mime pressing a button over and over again with the aforementioned extremity. It gets silly.