**Birthday Gift for My Math Sir**

I never expected Nandini—quiet, studious Nandini—to linger after class. But here she was, standing by my desk with those big brown eyes and that shy smile that made my pulse jump. “Sir, happy birthday,” she said softly, sliding a small, neatly wrapped box toward me.

I grinned, unwrapping it to find… nothing. Just an empty box.

Confused, I looked up—just as Nandini dropped to her knees in front of my chair. My breath caught as her fingers worked open my belt, her mouth already inches from my growing bulge. “The real gift,” she murmured, “is what’s inside.”

Fuck.

She didn’t waste time. Her nails scraped my thighs as she tugged my pants down, my dick springing free, already half-hard just from her boldness. Nandini licked her lips, eyes locked on mine, before she wrapped her fingers around my shaft and gave it one slow stroke. “Happy birthday, Sir.”

Then she took me into her mouth.

Warm. Wet. Tight.

She moaned around my cock, lips stretching as she worked me deeper, her tongue pressing against the underside. My hips jerked instinctively, and she let me push into her throat, gagging just a little before pulling back with a slick pop. “You taste so good,” she whispered, her breath hot against my tip.

I tangled my fingers in her hair, guiding her back down. This time, she took me all the way, her nose pressing into my pelvis as her throat squeezed tight around me. My head fell back—fuck, she knew exactly how to suck, her tongue swirling, her lips tight, hollowing her cheeks just right.

“Just like that, baby,” I groaned, gripping the desk as she bobbed faster, spit dripping down my balls. The sounds were filthy—wet slurps, her choked little moans, the slap of my hips meeting her lips.

Nandini pulled off, panting, her lips swollen and shiny. “I want you to come in my mouth, Sir.”

That was all it took. Her fingers stroked my shaft while her tongue flicked over my slit, teasing, until I was fucking her face in short, desperate thrusts. “Swallow it,” I growled, my balls tightening—

And then I was coming, hot spurts hitting the back of her throat as she sucked harder, milking every last drop. She didn’t stop until I was twitching, oversensitive, finally pulling away with a satisfied smirk.

“Best gift ever,” I panted.

Nandini licked her lips and stood, adjusting her skirt like nothing had happened. “Then maybe I’ll give you extra credit next time.”

Fuck. I was already hard again.