Warren was extremely pissed. He was going to destroy Buffy Summers and everything she held dear. He stood in the empty Sunnydale High library and began to chant, and his chanting was filled with his hatred, and that gave rise to a dark evil that seeped
out of the ground and into Warren. Warren knew he had summoned something powerful and evil, that would be able to destroy Buffy Summers once and for all.
Except he hadn't. All he had summoned was something extremely horny, that had been trapped beneath the Hellmouth for ages, since times long-since forgotten, and now wanted to get its rocks off. That spirit of lust saw the hatred in Warren's soul and transformed
it into powerful lust.
Warren, suddenly sprouting a semi, felt the immediate need to go find someone to fuck. Someone who had previously been a hated enemy...