Two young businessmen in Florida were sitting down for a break  in their soon-to-be new store in the shopping mall.  As yet, the store  wasn’t ready, with only a few shelves  and display racks set up.   

One said to  the other, “I’ll bet that any minute  now some senior is going to walk by, put his face to the  window, and ask  what we’re selling.”
Sure enough, just a moment later,  a curious senior gentleman walked  up to the window,  looked around intensely and rapped on the glass,  then in a loud voice asked, “What are you sellin’ here?”
 One of the men replied sarcastically, “We’re selling ass-holes.” 

Without skipping a beat, the old timer said,  “You’re doing well.  Only two left.”
 Seniors — don’t mess with them, they’ve been around!