When growing up we abbreviated anything massive to ‘mass’. This appears to have caught on given the ‘Admin Options’ at page, bottom right and, I have to say, it gladdens my heart.
Just how massive are these prunes, how do you get them delivered and do they keep you all regular ?
Actually, prune, in this context, means: to make a facial expression exhibiting ill temper or disgust. As in, “Their faces prune at the slightest provocation.”
That hyperlink allows any mod/admin to send a mass e-mail notifying all other staff members of a particularly ignorant, or egregious post.