Gwumpa is always shouting

Me: O hey please stop touching the walls. I just had them painted.

Grandboy: Ok Gwumpa.

Me: Ok stop touching the walls. Your hands are greasy and I’m trying to keep the new paint clean.

Grandboy: Ok Gwumpa, sorry.

Me: No, really, STOP TOUCHING THE WALLS when you walk past them.

Grandboy: Ok Gwumpa.

Me: PLEASE STOP! TOUCHING! THE! WALLS NOW!!

Grandboy: AAAUGH GWUMPA WHY YOU GOTTA SHOUT?!? YOU’RE BEING RUDE! JUST ASK NICELY NEXT TIME OK?!?