Today's physiology lesson was on 'Environmental Adaptability.' We were taken to the biology lab, strapped to cold metal dissection tables with our legs spread and secured. The teaching assistant injected synthetic semen of varying temperatures and viscosities into our wombs, recording the contraction frequency and intensity of the vagina and anus. My task was to remain on the edge of orgasm under the stimulation of the instrument's probe while loudly announcing the temperature and milliliter amount of each simulated ejaculation through a microphone. When the icy 10°C fluid was injected, my pussy clenched the tightest, while the 40°C warm mucus nearly made me lose control and squirt. The data proves that the deepest part of this body is indeed optimized for storing and measuring semen. After class, some of the teaching material remained inside me, and I could feel it seeping out as I walked. This feeling... so professional.