Telephone w/o the Telephone

I don't know if it's really telephone but I didn't know what to title it. I thought this was funny and should post it. I'm sure I will hear otherwise if I'm wrong.
This happened today while Rob was watching Baron and I was down in my office getting some work done. He would yell out and I would yell back. This seriously went on for 30 mins. I probably should have been yelling something more educational but I kept up with the "ahhh" as long as he did. Then Rob crushed his head...