Its when a gay space cowboy inserts his dick into another man(or female with strap on into female). Preferably the buttsex is done in space or a space setting ( rockets painted on walls with semen). Lasers are involved as well shooting every as cum squirts in your anal.
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.