"It is annoying when you are yelling."
Translation:Det er nederen når du står og råber.
It does, but "nederen" is only used by young people and only very informally.
'Står' implies that you are standing up, being upset and shouting. Without the 'står' it would just say that when at times or whenever you shout out loud, that is not very pleasant. Adding the 'står' makes it a more immediate and forceful shouting incident. Maybe others can explain it better more grammatically, this is just how I would explain it ;)