Derradja is a word of arabic origin meaning a person assigned as an admin in an online community such as a Facebook Page or Group, with the main role of deleting and banning community members who go against the rules set by the admins and moderators in charge of that community.
Male #1: Hey, why are you applying Vaseline on your ass?
Male #2: I just did the derriere deed with you know who, I have a sensitive bunghole cut me some slack!