A word used in particular in the field of customer service and/or support to describe either a customer or an end-user who is so obviously unintelligent that you might question their ability to be a productive member of caveman
society. Essentially a grown human being that
may not be able to tie their own
shoes.
That
guy was such a donkey, I can't believe that donkey can
spell his own
name, Who let that donkey in here?