Aaron is making progress, in a backwardly direction.
or a PSD
Aaron is dressed like an onion. Or a ogre.
well, that’s disappointing
Aaron thought his sore thumb was supposed to stick out in a distinctive manner. It pretty much looks like his other thumb.
rock on
Aaron bought two CDs blindly at lunch. Both are great.
overdressed
Aaron could have maybe worn a jacket or two less to the concert.