“So,” Isaac twists the phone in his hands. “These are for convenience?”
“Yep,” Stiles tosses a case at Derek and Derek catches it easily.
“Vibrant colours, dude, easy to spot in a struggle.”
Scott examines his for a moment and then beams, “This shade of purple is like a nail varnish Allison has.”
“I know,” Stiles says drily. “Hence why I picked it. Because you talk about shit like that, and it removes math from my brain to be replaced by facts about Allison’s beauty regime.”
Scott shrugs, unperturbed. “Last week you spent twenty minutes listing off all the different ways Derek’s eyebrows say hello.”
“What?!” Stiles squawks indignantly, face heating up as he glances at Derek guiltily. “I did no such thing.”
“My eyebrows say hello to you,” Derek repeats blankly.
“Well, it’s not like you’re particularly vocal, I have to read into these things.”
“I bet he’d be vocal if you gave him some incentive, Stiles,” Isaac says loftily, fitting his pink case over his phone. Derek shoves him off the back of the couch as Stiles stares incredulously.
“Hey,” Allison interrupts. “Why does Derek’s case have a pattern on, and the rest of ours are plain? Seems like favouritism to me.”
“Cos it was the last one, and I wasn’t gonna give Isaac the one with hearts on, was I?”
“They’re fine,” Derek says shortly, “Thank you,” he adds to Stiles before sticking his phone in his pocket, and the conversation moves on.
Allison has to replace her case two weeks later after Isaac accidentally runs it over, messing around on Scott’s bike.
Scott drops his phone messing around in the woods with Stiles, and Melissa sighs, fondly exasperated and calls the phone company for the fourth time in less than six months.
Isaac loses his phone, and won’t admit where until Danny hands it back to him in class and there’s half a dozen numbers scrawled on the back.
“Found it in Jungle, recognised the case,” he says with a smirk.
Stiles crows triumphantly, even if it’s not exactly the disaster scenario he’d envisioned when he bought them.
"I swear, we’ve single handedly fed a whole phone company for a year,” he comments to Derek a few weeks later. Derek hums non-committally, tosses a pancake and slides it onto Stiles’ plate.