James: This computer is motherfacking gay
Teacher: What did you say?
James: Motherfacking
Teacher: That is a rude word
James: This is not a rude word I said M-O-T-H-E-R-F-A-C-K-I-N-G not motherfucking.
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.