To say Hello from the other side. I called you a million times.
Teacher: Why are you Late Today? Student: Because of sign down the road. Teacher: What does a sign have to do with your being late? Student: The sign said, "School Ahead, Go Slow!"
Answer in comments so you can fully appreciate the joke)
Radio waves!
A long necked toothbrush!
Jerry's kids.
Adele. Some one set fire to the train
Sing* Hello from the other side!