the_debt_of_time

fear and was half-tempted to track down a boggart and release it upon the Muggles if only
to see herself reflected back in the image of the creature.
Petunia's crying distracted Mia from her pleasant thoughts. "What do you want
from us?"
"Right now? Come with me," Mia said and walked over to the hallway to stand in
front of a small open door.
Vernon and Petunia caught her meaning immediately and, with Padfoot snarling
behind them, slowly stepped into the cupboard under the stairs. Vernon had to go in
sideways, and Petunia let out a piercing cry when he stomped on one of her feet.
Mia smiled pleasantly as Sirius transformed back into a human so he could stand at
her side as they leant against the doorway. They watched, smiles on their faces as Petunia
was crushed against the wall by her husband while they tried to fit into the tiny space that
was unfit for a house-elf, let alone a child.
"What are you going to do?" Vernon asked, officially frightened.
Mia stared at the man and then turned to look at Sirius. "What do you think, love?"
Sirius grinned. "I say we lock them inside."
"For how long?"
"How old was Harry when they finally let him out of it?" Sirius asked, his focus
narrowed on the Muggles.
"Eleven," Mia answered, ignoring the gasp of terror that left Petunia's mouth.
"Eleven years. That ought to be long enough," Sirius said, and then slammed the
door shut, locking it from the outside. Vernon and Petunia began screaming.
Sirius and Mia made their way into the kitchen before they started laughing.
He rushed up behind her, gripping her hips and pressing himself against her arse.
"Would it be twisted to fuck you on their kitchen counters?" he asked before leaning
forward and capturing her ear between his teeth.
Mia giggled and pulled away from him. "Yes, it would be incredibly twisted."
Sirius pouted. "So what are we really going to do with the Muggles?"
"Well, we haven't used magic on them, so other than threats—which they wouldn't
even know how to report—we've really done nothing wrong, legally speaking. I suppose
we'll let them out in an hour or so. Once we're done pilfering their liquor cabinet."