James Franco '50 Shades of Batman And Robin' kinky PHOTOS go viral: actor's explicit, BDSM-inspired snapshots hit Instagram, what do fans think of actor's new 'gay art?'

Just a few weeks ago, James Franco starred in a sexy rendition of Kanye West's new music video "Bound 2" with co-star Seth Rogan. It's pretty epic:

But the "Pineapple Express" star took things to the next kinky level on Instagram on Wednesday, Dec. 4. Introducing, "50 Shades of Batman and Robin" -

jamesfrancotv: "50 Shades of Batman And Robin."

([Maybe] Franco dressed in BDSM-inspired Batman attire):

jamesfrancotv: "50 Shades of batman and robin."

([Maybe] Franco covered in semen-like substance... while flaunting a Batman mask):

Interesting...

Apparently it's art - as The Blemish puts it, "[J]udging by the two pictures from it, I'm assuming it implies Batman and Robin are gay for each other."

The funny thing is... Franco was a huge fan-favorite to star as Christian Grey in the hot-and-steamy film adoptation of "Fifty Shades of Grey." The role eventually went to Jamie Dornan:

50 Shades of Grey Movie Casting News: James Franco: Spring Breakers' 'BDSM' Porn Doc 'Kink' Sparks Christian Grey Buzz

Search for Christian Grey: James Franco NOT Interested in Playing Anastasia Steele's Kinky Lover, 'Risk Just Not Rewarding'

What do Mstars fans think of Franco's latest NSFW art?