Inspired by me recently getting glasses. Also I'm posting this in an airport so possible errors ahead, I'm sorry in advance :')

If x = y - 2, solve the following:

April hated algebra. Actually, she just hated mathematics in general; especially trig, which she still hadn't got the hang of. Donnie was meant to be tutoring her in it soon, but he was busy doing some last-minute repairs to Raph's Stealth Bike, so she had holed herself up in his room alone for now. Her papers were spread around her, the notebook balanced in her lap, but she had absolutely no idea where to start. This was definitely a downside of being out of school, she thought.

"Hey, Don? Do you have a- Oh." Leo hesitated behind the door he had just flung open, shifting nervously. "Sorry, April."

She smiled. "No worries. What'd you need?"

"Just Donnie's help with... a technology problem..."

Seeing the blush forming on his green skin, April chuckled. "Is it the toaster again?"

As it turned out, Leonardo the Fearless Leader had a longstanding feud with the toaster - and every other appliance in the kitchen, for that matter. There was a little chart on the fridge keeping track of the rather one-sided score; Mikey made sure to update it religiously after every battle, much to his older brother's chagrin. Judging by the look on his face, the chart needed a new tally.

"He'll be done in a minute," she assured him with a wink. "And don't worry, I won't tell Mikey."

"Much appreciated," he laughed, before casting his gaze over her work. "What're you doing?"

"Schoolwork." She scowled at the page as if personally offended. "I hate it."

He wasn't listening, though. The turtle was leaning around the door now, chuckling to himself but struggling to hide it. She tilted her head, confused, and he curled his fingers around his eyes like binoculars. For a second, she thought he might have lost it, but then she understood; Leo had never seen her wear her glasses before.

"What, these?" She rattled the handles. "They're glasses. They help me see."

His own eyes widened, and he traced them almost subconsciously. "So, you can't see without them?"

April shrugged. "Not well. I can see, it's just blurry."

"So..." Leo moved closer cautiously. She gestured for him to sit beside her, and he eagerly obliged. "So how come you've never worn them before?"

"I wear contacts usually." April shifted the papers, more than happy to be distracted for now. "Glasses are a little less practical."

His blush was deepening. Sometimes she forgot how much her surrogate brothers just hadn't been exposed to. "Contacts?"

She pointed to her eyes. "Little lenses that go over your eyes. They're thin and plastic; they do the same thing as glasses, but without all the frame."

Poor Leo looked - for lack of a better word - shell shocked. His hand drifted towards her face, before he immediately thought better of it and recoiled. Giggling, she removed the glasses and handed them to him, with a warning not to damage them. He held them like one would hold a fragile bird with a broken wing, and she had to admit, it was utterly adorable.

"That's so weird…" He breathed.

An explanation formed about her long-sightedness and how these helped, but she decided he was already overwhelmed enough for the time being without all the science. Instead, she offered him a pat on the shoulder and a soft "there, there". Green features sinking into a frown, still as proud a leader as ever, Leo shook her hand off with an amused grunt. Suddenly, an idea hit her.

"Do you want to try them on?" April asked, grinning.

The turtle glanced down at the object with something strangely akin to fear. "Is that okay? Will it mess up my eyes?"

"Nah, it shouldn't." She snatched them from his hands and turned to face him. "They might give you a headache if you leave 'em on too long, but you'll be fine."

He didn't seem entirely sure, but he shifted towards her and let her place the glasses on his face. Issue one: Leo had no ears for the handles to rest on. Issue two: Leo had no nose to hold the glasses up. Issue three: Leo had no idea how glasses worked, and was squirming around in a way that made solving the first two issues almost impossible. In the end, April opted to crawl behind him and simply hold the glasses in place, while he checked his reflection in his T-Phone.

April tried to hide her smirk behind his head. "So, what do you think?"

"I think…" Leo stared hard at the image, one large finger gently stroking the blue frame. April had to admit, it went well with his blue bandana. "I think I like 'em!"

She laughed. "Well awesome, but I am gonna need them back to finish this homework."

"Wait, wait, wait! Let me go show the guys!" He exclaimed, his eyes slipping into their trademarked puppy-dog look. The glasses seemed to help, magnifying his big eyes even more.

April sighed, "Fine…"

"Great!"

With no warning at all, Leo leapt to his feet. She cried out, frantically grabbing the ridge of his shell with one hand at the last minute, the other hand clinging to her poor glasses. It was awkward to tuck her legs around his shell, but sheer panic let her accomplish it as he ran to the door. He almost slammed her against the doorframe in his haste to get out, but didn't hear her chastising him as he began shouting for the others.

Pressing herself as close to his shell as possible, one hand still holding the glasses to his face, April groaned. "This is why I never told you guys!"