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Clark becomes frightened by his uncontrollable new gift of heat-vision, which allows him to start fires using his eyes, as this new found power sets his classroom and the Talon on fire. Jonathan then comes to the conclusion that his heat-vision occurs during thoughts of sex, as the first time he was watching a sex-educational video, while the second time, he was with Lana.
Meanwhile, Lex is seduced into marriage by Desiree Atkins, a woman who possesses Kryptonite-enhanced pheromones that can convince any guy to do anything. After she marries Lex, she attempts to have Jonathan kill him so she can inherit his wealth.
Pete: Every year the incredibly aged Mrs. Kowalski kicks of biology class with an ancient sex ed film.
Clark: Who told you that, your brother?
Pete: No, my dad.
Ms. Atkins: I’m really sorry about the air conditioning in here, but it looks like we’re all going to have to suffer through this together.
Pete: Bring on the pain.
Clark: Look, you seemed a little distant this morning. I wanted to make sure that everything’s okay between us.
Chloe: Yeah, it’s hunky-dory.
Clark: Wait, now I know something’s wrong. The only person who says “hunky-dory” is my father.
Chloe: Look, Clark, I guess I just let my feelings get the better of me. But, you know, we made a decision and I’m perfectly fine with it.
Clark: Me too.
Lex: I let my passion get the best of me. And I won’t make that mistake again.
Clark: Lex, I don’t think having passion is such a bad thing.
Lex: You’re right Clark. Passion for life and work and friends is great. As long as you keep it in check. I should take a page out of your book.