When you are having sex with a girl doggy style and promptly punch her anus with a ring pop whilst still having sex.
"Yea I really caught my girlfriend by surprise last night after the movies. I hit her with a green lantern and she had no idea what to do" aka The Green Lantern
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.