Grandboy, shouting imperiously, “GWUMPA!!”

Me, wondering what I’d done, “Yessir? What’s up?”

Grandboy, in the same tone, and running from one room, past me and then outside, “ILOVEYOU! GWUMPA I LOVE YOU!”

So far nothing has come chasing him from the other room, so I imagine that was just a bout of excitement that hit him