That messy theory revolves around the idea that Ant-Man will shrink down and climb up the Mad Titan's posterior before killing the villain by growing into Giant-Man from within. It's a theory that has already been addressed by directors Joe and Anthony Russo and Thanos himself, Josh Brolin, but now Ant-Man actor Paul Rudd is offering up his own take on the theory.
During a recent visit to The Graham Norton Show, Rudd, who is joined by his Endgame co-star, Chris Hemsworth, initially hesitates to address the theory. The actor initially laughs, telling Graham that he had known the theory he was referencing, before going on to openly call it the Thanus theory. While both Graham and Hemsworth admitted the theory would seemingly work, Rudd was quick to note there were other orifices Ant-Man could enter -- and that it didn't necessarily need to be through Thanos' butt.
"A lot of people have asked me recently if I shrink down and go… into Thanos, in a certain orifice, and then grow giant size," Rudd said with a laugh. "But why not the ear or the nose? Why does it have to be [that]?"
When Graham went on to explain that the theory made total sense, Rudd jokingly agreed. "Scientifically, you're right."
It remains to be seen what ultimately leads to the demise of Thanos in Endgame, however, it would seem unlikely that the Thanus theory will actually come to fruition on the big screen. Thankfully, though, until the film releases, we can continue to enjoy the tongue-in-cheek responses from some of the cast members on social media regarding the hilarious fan-theory.
Directed by Anthony and Joe Russo, Avengers: Endgame stars Robert Downey Jr., Chris Evans, Mark Ruffalo, Chris Hemsworth, Scarlett Johansson, Jeremy Renner, Don Cheadle, Paul Rudd, Brie Larson, Karen Gillan, Danai Gurira, Benedict Wong, Jon Favreau and Bradley Cooper, with Gwyneth Paltrow and Josh Brolin. The film arrives April 26.