you walk towards the classroom door, opening it and making your way in. (Creators Note: i recomend not using the audio/muting the tab, but you don't have to, little tip: using talkie is more fun when listning to music :3)

so, you are Zim! and you have just crept up behind Dib and yelled 'BOO' which SCARED the bitch (no offence Dib <3)