Weird, funny, and deliciously creepy, "Bottoms Up" shows us a twisted not-so-distant future where technology is used to control even the most intimate of human acts. A mismatched pair of socks brings two people together, but once they find out they’re perfect for each other, their obsession with a clean bill of health drives them to seek the ultimate in safe sex. A slick read that melds science fiction and literary romance, "Bottoms Up" is an utterly original look at the disintegration of love as mediated by our modern obsessions with health, self-improvement, and technology. This story originally appeared in Tin House.