the_debt_of_time

The men were covered in sweat and motor grease, wearing Muggle jeans and tight
white—but now stained—t-shirts. Sirius's long black hair had been pulled back away from
his eyes into a knotted ponytail, though a few strands had sprung loose, clinging to his
neck. He wiped his forearm across his brow to remove the sweat that beaded there.
Mia grinned. Well-hidden by the Muggle-Repelling Charm on the house, she subtly
removed her wand and flicked it toward the wizards.
"What did you do?" Ginny asked curiously.
Tonks giggled. "She's been casting a Warming Charm on them every ten minutes,
slowly increasing the temperature. They're so preoccupied with fixing that bike, they
haven't even noticed."
"What's wrong with the bike?"
Mia slipped her wand back into her pocket. "They came out to change the oil, but
when Sirius went to take it for a ride, it wouldn't start."
"How much longer do you think they'll be?"
"Two wizards playing Muggle mechanic?" Mia chuckled. "They'll be here all day."
Ginny shook her head and laughed, more than likely recalling her father's attempt
at fixing Muggle toys and gadgets in the shed. "You'd think that Sirius would have figured
out how to fix that thing considering how often he talks about it."
"Oh, he knows how to rebuild the entire engine if he'd ever need to," Mia informed
her. "While Remus, Lily, and I were studying Ancient Runes and Arithmancy, Sirius was
reading that bike's manual from front to back. He and Jamie rebuilt the engine at least once
every six months. Unfortunately for my sweet Sirius, he hasn't figured out yet that I cast a
Stasis Charm on the engine twenty minutes before they came outside. That bike won't turn
on until I aim my wand and say Finite."
Ginny outright laughed, throwing her head back and briefly drawing the attention
of the irritated men near the motorbike. At the sudden attention from the wizards, Mia and
Tonks smiled and waved.
"Need any help, love?" Mia called out.
Sirius scoffed loudly and ignored her.
She grinned in reply and re-cast the Warming Charm once more, increasing the
temperature by just a degree or two before pocketing her wand again.