My favorite example of one of those was a woman on the Red Line last year who had a Jewel bag sitting on the seat in front of her. She watched me ask the woman sitting right next to this bag to move it only to be told it wasn't hers, but it wasn't until I shrugged my shoulders and tried to move the bag that she pitched a screaming fit about me 'touching her things without asking'. She got my patented Death Stare #3.