World's First 4-D Sex Tape! (At Least We Think Someone Is Having Sex Here)

Mary Roach's "Bonk" (not to be confused with this or this) takes a look at the research of sexual physiology—in other words, what's really going on with our bodies when we fuck, and believe it or not no one really knows for sure. From Leonardo Da Vinci's "coital interlocking" theory to the frustrated egg breakers of today, lots of people have tried and failed to figure out exactly how Bolt A fits into Slot B. The latest attempt involves 4-D ultrasound movies that can look inside us in real time, and it also involves Mary and her husband, who became the first sexual guinea pigs to be filmed internally while getting it on. She can explain the whole thing better in the video below, and though it may seem a little dry we promise you'll be rewarded with some hot 4-D porn if you watch the whole thing. (Unfortunately, like most ultrasounds, you still need a doctor to tell you where the penis is. Still!) More »

How Fuckable Is Your Country? Latin American Edition

In an effort to quantify, qualify and classify all there is to know about our sexual omniverse, our sexy friends at Guanabee have attempted to help every one out there determine just how easy it is to get laid depending on what country you call home. They've assigned all the major countries of the Spanish-speaking world (and Brazil) a number known as the "Country Fuckability Value" (CFV). We're not really sure how it's calculated, because it's rooted in high-end mathematic theory and therefore too complex for dummies like us the average blogger. But we really like the idea behind it, even if what we really want to know is how accurate it is. To test the system, we've chosen what we think is the hottest babe from each of the countries in the chart and lined them up to see how their national ratings translate to real-life bangability. Granted, some of our choices might not coincide with your own; after all, identifying hot Uruguayan pornstars is not our strong suit, and sometimes we've had to resort to national descent instead of actual citizenship. If you disagree with our choices or the rankings, defend your nation's honor in the comments. That said, and without further ado ... let the battle of the babes begin. More »