Two Irishmen were standing at the base of a flagpole, looking up. A blonde walks by and asked them what they were doing.

Paddy replied, 'We're s'posed to be finding the height of this flagpole, but we don't have a ladder.'

The blonde took out an adjustable spanner from her bag, loosened a few bolts and laid the flagpole down.

She got a tape measure out of her pocket, took a few measurements, and announced that it was 18 feet 6 inches.

Then, she walked off....

Mick said to Paddy, 'Isn't that just like a blonde! We need the height and she gives us the length.'