So it seems even Kryptonians aren't immune to a sneaky dig. Even Superman produces a bit of mucus to prevent himself suffering from super coughs and colds. Whether after he picks it, he licks it, rolls it or flicks it, we don't know. Not for us to say.
French fanboy Gregoire Guillemin has produced these awesome Secret Life of Superheroes prints; letting us look beyond the mask and superpowers to see our heroes in all their (super)humanity.