1) Term created/used in the music video 'build god then we'll talk' by Panic! At The Disco..
2) A mime that has sex with the air because he's horny and doesn't have a girlfriend. A Porno Mime pretends to bang an imaginary person without saying anything. Most chick porno mimes have silent orgasms (no idea how that works out, but whatever)
3) My nickname.
If you see a porno mime, get away from him/her. It is very possible that a porno mime will get close to you and ask you: "Hey, you want to have some fun?"