Pesky Mini Skirt

In downtown Roanoke, at a crowded bus stop, an attractive girl was waiting for a bus. She was decked out in a tight leather mini skirt with matching tight leather boots and jacket. As the bus rolled up and it became 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 on the bus.
Slightly embarrassed and with a quick smile to the bus driver she reached behind her and unzipped her skirt a little thinking that this would give her enough slack to raise her leg. Again she tried to make the step onto the bus only to discover she still couldn’t!
So, a little more embarrassed she once again reached behind her and unzipped her skirt a little more and for a second time attempted the step and once again, much to her chagrin she could not raise her leg because of the tight skirt.
So, with a coy little smile to the driver she again unzipped the offending skirt to give a little more slack and again was unable to make the step.
About this time a big burly man that was behind her in the line picked her up easily from the waist and placed her lightly on the step of the bus. Well, she went ballistic and turned to the would-be hero screeching at him “How dare you touch me!! I don’t even know who you are!”
At this, the big guy drawled, “Well ma’am normally I would agree with you but after you unzipped my fly three times, I kinda figured it would be OK!”