Malcolm was a bit of a Star Wars nerd. He enjoyed the films and had somewhat into the books, comics and video games. Sure, he wasn't an uber-nerd who could quote novel and comic and nearly every minor character, but he enjoyed the franchise. So, on a whim, he thought of the Twi'lek species (the green-skinned slave girl from Jabba's palace) and turned the page. What he found was essntially the Wookieepedia article and then some.
He perused the data, thinking of how to change things. After a few minutes of thinking, he decided to make them a real earth species that shared the planet with humans. He found the introduction where it stated "Twi'leks are a fictional alien species in the Star Wars universe...", and changed it to state: "After humans, Twi'leks are earth's second sentient humanoid species. Evolving alongside humans in central Asia, Twi'leks make up 33% of the earth's population. Like human's they've spread to all corners of the globe." After thinking for a few minutes, Malcolm also added "While it is impossible for humans and Twi'leks to breed with each other, they still intermarry and often adopt children from both species."
Considering that good, he put down his pen and watched the words and paragraphs rearrange and reconfigure as the world changed to accommodate his changes. He was glad he'd been sitting, because he suddenly got a huge wave of memories. Twi'lek teachers, friends, classmates, coworkers, family members. While his parents both remained human, he now remembered growing up with a Twi'lek sister a couple years younger than him who had been adopted when he was five. While the Star Wars films hadn't changed, he now had memories of Twi'leks in other movies and TV shows.
He always found female Twi'leks exceedingly sexy, even before making the changes. Now, he pulled up a porn site and started browsing. He found plenty of Twi'lek porn now. It didn't take him long to find a video and start jerking off. It didn't take long to cum. When he finished, he cleaned himself up and carefully hid the book. No sense in someone else finding it. Once that was done, he went out to check out his new world, and to decide what to do next.