Bubba and Ray (Tennessee mechanical engineers) were standing at the base of a flagpole, looking up.
A woman walked by and asked what they were doing.
"We're supposed to find the height of the flagpole," said Bubba, "but we don't have a ladder."
The woman took a wrench from her purse, loosened a few bolts, and laid the pole down. Then she took a tape measure from her pocket, took a measurement, announced "Eighteen feet, six inches," and walked away.
Ray shook his head and laughed. "Ain't that just like a blonde! We ask for the height and she gives us the length!"