A legendary and elusive potion with no current means of production, the effects it has on Robbie(y) is horrifying and un-describable. The effects on one not worthy is currently unknown but assumed to be lethal and excruciating.
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.