30) Unintentionally make your commissar think that you are worshipping Slaanesh when in fact you are listening to dubstep
Things not to do in front of your Commisar: Soiling your armour when scared. Doing the above again if scared immediately after. Farting in his direction. Telling him his mother was a hamster and his father smells of Elderberries. Or even Eldar-berries.