Press right twice, then down, then right 4 times, down once, three rights and up right after. Finally, press up right right down twice and then down right. The Noob sings Sabotage from the Impostor Mod.
For Selever press the keys like this: left down up right up 3 times. After that you then press the keys in this specific order: right up down left down left. You're very welcome.