Nobody talks about it, but everybody watches it — and here’s proof.

Exclusive data obtained by The Post from Pornhub.com revealed Lisa Ann — who starred in the Sarah Palin-themed smutty parody “Who’s Nailin’ Paylin?” — carried the stars and stripes from DC to Tibet as the most popular female porn star.

The Post examined the porn-viewing habits of ten cities/countries from around the world: New York City; Albany; DC; Salt Lake City; Amsterdam, Netherlands; Reykjavik, Iceland; Riyadh, Saudi Arabia; Tibet; Abbottabad, Pakistan and Vatican City.

By examining the total number of page views for various celebrities, porn stars and sex categories, Pornhub.com was able to compile lists of each location’s favorite online XXX-fare.

PHOTOS: VATICAN CITY’S TOP 10 PORN STARS

SEE: BORN & AFTER PORN STAR MAKEOVERS

Complementing Lisa Ann was the top male porn star Mandingo, known for his 12-inch package that would make even Anthony Weiner blush.

Another curvaceous brunette took top honors in the celebrity category — Kim Kardashian.

Kanye West’s headline-grabbing baby mama was the most popular celeb searched, while her sex tape partner Ray J ranked among the top male celebrities. Despite being made over 10 years ago, Kim K’s sexcapade is apparently still in high demand.

When it comes to endurance, the rest of world faced stiff competition from Tibet — the mountainous spiritual home of the Dalai Lama. While the average time spent around the globe was about six minutes over six different Web pages, Tibetans were able to maintain a hard Tantric focus during marathon fourteen-minute sessions spread over nine different sites.

Tibet’s endurance made it stand out, but another capital of religion was notable for entirely different reasons.

While the site was unable to pull data for Vatican City over the past eight months, it was almost exactly eight months ago, on July 27, 2012, that Pope Benedict XVI hosted a top-level meeting of Cardinals to examine internal Vatican procedures and rules regarding Internet usage following the “Vatileaks” scandal. It emerged last year that the pope’s butler released internal Vatican documents that reportedly uncovered the blackmailing of homosexual clergy.

Despite the mysterious lack of information about the Vatican’s legal Internet porn consumption, it was revealed earlier this week that Vatican City was downloading illegal porn videos starring transsexual superstar Tiffany Starr.

Though Tiffany Starr didn’t appear in the data that Pornhub compiled, XXX star Sasha Grey, who starred in the 2009 Steven Soderbergh-directed film “The Girlfriend Experience,” appeared in the top 10 porn stars for all the cities we studied except Vatican City and Riyadh.

Finally, while Saturday was the most popular day to watch porn in Abbottabad, Pakistan and Tibet, but the United States preferred to check out porn on Mondays.

Perhaps it’s time for Wednesday to lose it’s “hump day” crown.