Baba and Junior 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 Baba, "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 and announced, "Eighteen feet, six inches," and walked away.

Junior shook his head and laughed. "Ain't that just like a dumb blonde! We ask for the height, and she gives us the length!"