“Loony, Loopy Lupin.”
“AHA!” screamed a voice from overhead . . . Peeves was hanging upside down from a chandelier and grinning maliciously at them.“Potty asked Loony to go to the party! Potty lurves Loony! Potty luuuuurves Looooooony!”And he zoomed away, cackling and shrieking, “Potty loves Loony!”
“ I never could talk to my sister Molly, because she was loopy”
“Job was what you'd technically describe as a loony.”
“Couldn't I just be a bit loony instead of gifted?”
“Grace arrived, like the big, loopy stitches with which a grandmotherly stranger might baste your hem temporarily.”