Quick, call the Los Angeles Zoo ... One of their 'inmates' has escaped and taken-up residence at 7th and Montana. Meet "Serena the Hyena," a female in her mid-thirties who specializes in Laughing Like a Maniac at regular intervals. "Good Lord," I said, "Get a load of that woman's laugh ... I hope it's not infectious." At first, no one could figure out why Serena was laughing. She was sitting alone, talking to no one in particular, and her head was buried in a newspaper. Every few minutes she'd let out a guffaw that was vaguely reminiscent of the Laugh Track in bad '70s sitcoms. Finally, I couldn't take it any more. I just had to see what was cracking her up and that's when I really got worried. She was engrossed in an article about the Economic Stimulus Package ...!