The Zipper In a crowded city at a busy bus stop, a woman who was  waiting for a bus was wearing a tight leather skirt. As the bus  stopped and it was her turn to get on, she became aware that  her skirt was too tight to allow her leg to come up to the height  of the first step of the bus.   Slightly embarrassed and with a quick smile to the bus driver,  she reached behind her to unzip her skirt a little, thinking that  this would give her enough slack to raise her leg. Again, she tried to make the step only to discover she still couldn't.  So, a little more embarrassed, she once again reached behind  her to unzip her skirt a little more. For the second time,  attempted the step, and, once again, much to her chagrin, she  could not raise her leg. With little smile to the driver, she  again reached behind to unzip a little more and again was unable to  make the step.  About this time, a large Texan who was standing behind her  picked her up easily by the waist and placed her gently on the  step of the bus. She went ballistic and turned to the would-be Samaritan and  screeched, "How dare you touch my body! I don't even know  who you are!' The Texan smiled and drawled, ""Well, ma'am, normally I would  agree with you, but after you unzipped my fly three times, I kinda  figured we was friends."