3.

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 She tried to take the
step, only to discover that she couldn't.

So, a little more embarrassed, she once again reached behind her to unzip
her skirt a little more, and for the second time attempted the step.

Once again, much to her chagrin, she could not raise her leg. With a little
smile to the driver, she again reached behind to unzip a little more and
again was unable to take the step.

At 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 yelled '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 were
friends.'