Best grandma story I’ve got… when my grandson was about 3, for the first time in his life I told him no. He stomped (he was wearing his favorite cowboy boots) into the living room and told his dad “Momo’s being an ass”! His dad said “you go tell your Momo you are sorry”. Said grandson stomps back into the kitchen…”Momo I’m sorry you’re an ass”. 
he’s 14 now and hates when I tell that story. Wait till I meet his first real girlfriend.