A little one-shot that came into my head...
It was another long day in the Auror Department and Harry Potter was bored. Sliding in his chair across from his cubicle, he headed to fellow squad member Susan Bones.
"Gee Bones, What are we doing tonight?"
"The same thing we do every night Potter, try and take over the world!"
The two Aurors laughed at the joke, then stood up off their chairs.
"We're Potter and the Bones, Yes, Potter and the Bones." Harry sang.
"One is a genius, The other's insane." Susan sang in reply.
"We're Auror Department mice, ourgenes have been spliced."
"We're Potter, we're Potter and the Bones, Bones, Bones, Bones."
"Bones, Bones, Bones, Bones, Bones."
The two Aurors started giggling just as Head Auror Gwain Robards came walking past.
"Get back to work you two. I'm sure that you have a case or two to deal with." the Head Auror said.
Susan picked up a suitcase that was laying on the desk. "Yeah, mines a suitcase full of holiday clothes!"
"You know what I mean Bones. Seriously, you are just like your father. He and those bloody Marauders made this department hell."
Suddenly Robards's Head turned into a donkey's head, Harry discretely hiding his wand. As donkey-Robards trotted away, Harry and Susan started laughing.
"He made a right ass of himself. And that, Potter, is neigh joke!"