A Really Bad Day

A man walks in a bar, obviously unhappy, orders a drink and huddles over it when a burly bully comes over, grabs the drink and downs it.  At which point the customer bursts into tears and the bully suddenly besieged by guilt says, "Don't cry little fellow, I can't stand seeing a grown man cry.  I'm sorry I took your drink. "  The sniffling customer said, "You don't understand, this has been the worst day of my life. I lost my job, somebody stole, my car, I took a cab and left my wallet in it, my wife has left me, my children won't talk to me. Finally I came into this bar and just when I'm ready to put an end to it, you drink my poison!"