I'm on a work call

We give our old cell phones to the boys for toys. Sam's new thing is to walk around with the phone to his ear yelling "Hello, Hello?" (kind of like you would if you were losing cell service). And then he says "yeah yeah yeah, uh huh" And sometimes he says "SSHHH, I'm on a work call" He does this all day long, lol, it cracks me up!