Yup, him and Filtch writing rambling letters to the editor in the Daily Prophet.
Or shooting hexes at the kids feet just to watch them dance.
He'd be like Grandpa Simpson.
"Ehh, why didn't you get something useful, like storm windows, or a nice pipe organ? I'm thirsty. Ew, what smells like mustard? There're sure a lot of ugly people in your neighborhood. Oh! Look at that one. Ow, my glaucoma just got worse. The president is a Demmycrat. Hello? I can't unbuckle my seat belt. Hello?"