Firstly, I’m quite short. My chemistry teacher is taller than average, so she’s quite big compared to me. To describe her: Thin, strong looking thighs. Big and round butt, curving perfectly into her back. Perfectly curvaceous waistline. Big, beaming eyes, brown hair. Large, round and natural breasts. Big, luscious lips.
One day, she came into class a bit late, I was sitting at a lab table alone (my lab partners were absent) near the door as she came in. I noticed that her breasts were hanging lower somehow. I assumed she had normally been wearing a pull up bra, or whatever you call it, and wasn’t that day.
I must have been staring for too long, because she made eye contact with me and faintly smiled. I didn’t know what to think so I just put my head down and kept working on my laptop. Only when she walked past the lab table later did I realize why her breasts were lower: she wasn’t wearing a bra at all, I could see her nipples poking through her thin shirt. I couldn’t help myself and I could feel my penis begin tighten.