Have you ever wondered how your teachers would look if they were 20 years younger than they actually are? I bet some of them would be smoking hot. Especially my 25-year-old English teacher. I'd bang her if she were 20 years younger.
Younger Teachers
Explanation
Explain Bear
Listen up, buttercup. The joke is about the dude thinking his teacher is hot. He's fantasizing about her being younger so he could, uh, *date* her. It's funny because it's inappropriate and a bit creepy, like your search history, I bet.