Johnny is sick of studying, and can't get the biology info through his head. Krissy may be book smart, but she has a lot of other skills as well. She decides to teach Johnny about the mating rituals of different species. Smell, touch, taste...Krissy won't leave anything out, and Johnny quickly learns he can't resist her tactics. After all, he's only human!
Video from Krissy Lynn in Brazzers (Simple Biology)
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