As the galaxy is to multiple solar systems, and the universe is to galaxies, the Infiniversal is the collection of infinite amount of universes, anti-universes, everything and nothing and all which they contain. It's rather big.
Used when unsure if the object is the superlative in all possible universes.
when you're holding up your phone and making faces at it, as though you are taking a selfie, but you're really taking a picture of the person across from you or the wall or anything else that seems interesting but you don't want to be caught dead taking a picture of.
This action is often made more convincing by wiggling the eyebrows or opening the mouth, to pretend you're trying to get a Snapchat filter to work.