SpaceX CEO Elon Musk was a guest on “The Late Show with Stephen Colbert”  Wednesday night, where he proposed that Mars could be made livable for human beings, but it would have to be warmed up first. The fastest way to accomplish that task? “Drop thermonuclear weapons over the poles,” answered Musk.

Musk took to Twitter Saturday afternoon to insist that he’s not the “super villain” Colbert suggested.

And much more boring.