"Follow the creepy bad guy back to his lair, great idea idiot." Xander scolded himself as he stood outside Nathan's house inside a prickly bush under his windowsill while the rain came pouring down. After three hours he was soaked, miserable, hungry, and ready to leave when one of the Cordettes walked right up to the house and knocked on the door. "What is Tiffany doing here at this hour?" Staying focused on the window Xander watched as Tiffany came inside, giggled, flirted, drank alcohol, had sex with Nathan on the couch, and had her head bitten off when Nathan turned into a big giant pray mantis.
&&&
"Giles wanted proof, I'll give him proof." Xander walked into the library the next morning with his biology book under his arm. The fact that he could study and research he accredited to Willow and Giles, who had been giving him more of the research load lately. "Hey Giles, did you know that the male pray mantis is carnivorous too?"
"I'd heard that." Giles agreed.
"Well Mr. French is a big giant He-Mantis and he killed Tiffany Matthews last night."
"You can't be serious."
"I saw the whole thing big guy. I just can't understand why it took me so long to figure out. Probably because I thought it was only the female that was cannibalistic during sex."
"Xander what you're saying."
"Is scary and creepy and yet it's true so excuse me while I go to class and make sure that he doesn't eat anyone else, before you can give me a bat sonar and a large machete."
"Why you?"
"Well Buffy's not going to do it and as one of mamma's victims I feel a certain obligation. Have them ready for me after school. I attack tonight." Xander walked out of the library with a determined and focused look on his face. He finally got to be the hero.
"That boy is insane," Giles decided and yet he still got the equipment ready for Xander after Willow confirmed that Tiffany Matthews was indeed missing.