A male senior college student has a crush on his male professor who has the perfect bubble butt. But when he shows up from vacation having gained weight especially in his ass (which is embarrassing foe the professor), the student is incredibly turned on. As the semester goes on the professor's ass continues to grow and stretch his khakis. And evenually in private the professor sits on the student

Chapter 3: Catalyst

Dr. Davidson's gaze lingered on him for a moment longer, a hint of concern in his eyes. Then, as if sensing Alex's discomfort, he turned back to his bookshelf. "Well, I'm glad to see you're passionate about it. That's always a good starting point." As he spoke, Alex felt his eyes drawn to Dr. Davidson's backside once again, the curve of his buttocks straining against his khakis. He quickly looked away, feeling a flush of embarrassment spread across his cheeks. "Sorry, what did you say?" he asked, hoping to cover up his momentary lapse in attention. Dr. Davidson turned back to face him, a small smile playing at the corners of his mouth.

"Alex, you seem distracted. Is everything alright?"

Alex's heart pounded as he forced himself to meet Dr. Davidson's gaze, willing his cheeks to stop burning. "Yeah, I'm just...I'm really interested in this topic, that's all," he said, trying to sound casual and nonchalant, despite the turmoil inside him. He couldn't shake the image of Dr. Davidson's ass, filling out his khakis just right, and it was making it difficult to think straight.

Davidson's smile faded, replaced by a look of genuine concern. "Alex, it's okay if you're feeling overwhelmed or anxious about the paper. That's what I'm here for—to help guide you through the process."

Alex felt a pang of guilt for not being more focused during their meeting.