Open Your Mouth Edit Meaning

1. when you see your unsuspecting friend with his hands at his sides, you walk up to him and yell Open Chest! and you punch him in the ches..

1. 1. under 18, as in jailbait 2. having not gone through puberty yet "I would have gave it to her...but she's underripe."..

1. An image board on 4chan that originated in 2008 after the slow demise of /b/. It stands for Robot 9000. /r9k/ posters are usually refere..