@jamesfranco / . 1 / 12
@jamesfranco / . 1 / 12

Apparently if you leave James Franco and Seth Rogen alone in the woods for a few hours … things get really weird. Instead of doing normal dude stuff together like going to a strip club, playing poker or bowling, the longtime friends braved the wilderness and seemingly in no time, took their clothes off and then took to Instagram to document their antics on Friday. Somehow none of this is surprising.

In one of the images, Franco and Rogen are crouched under a tarp with a caption that reads, "See if me and seth can make it, NAKED and AFRAID!!!! Wtf?! You'll see…….."

It's unclear if the former "Freaks and Geeks" stars got naked in the great outdoors to film something for the Discovery Channel's show "Naked and Afraid," or if this unusual activity is just another casual hangout for the two funny men.

In another pic, the two seem to be prancing around a field -- still very much naked. Along with the frolicking pic, Franco wrote, "Just survivin', Naked and Afraid. This is how we do. @sethrogen."

While the real story behind the images is still unclear, the 36-year-old "Spring Breakers" star and the 32-year-old "Knocked Up" actor have been known to pull some pranks in their days. They famously spoofed Kim Kardashian and Kanye West's over-the-top "Bound 2" music video, as well as the couple's Vogue cover. Rogen and Franco and also starred in the disaster comedy "This Is The End" in 2013.