Well... Apparently they both enjoy riding on a motorcycle not only topless but backwards in a mans arms.
Kanye West's PDA-filled Bound 2 music video featuring his fiancée Kim Kardashian dropped last week.
James Franco and Seth Rogen premiered their hilarious shot-for-shot dry-humping parody Bound 3 on Facebook Monday.
The real star of the video is Rogen's extremely hairy back, which is featured prominently at several points in the clip.
The Emmy-nominated Canadian even reclines and stretches his arms out over the vibrating motorcycle just like the 33-year-old reality star.
Seth and the Keeping Up with the Kardashian's star clearly have very different silhouettes even though Kim was reportedly retouched.
However, unlike the couple of 19 months, James and Seth just celebrated their 10-year bromance anniversary on November 15.
The comedy duo have appeared together in This is the End, Pineapple Express, and Freaks and Geeks.
The inseparable pair shot the parody while in Vancouver working on next year's comedy The Interview, which Rogen is helming with Evan Goldberg.