So where did the first blonde come from? (there is a joke in that somewhere, but I ain't touching that one)
No worries, mate: then I will:
Two blondes walk into a bar. They tell the bartender, "Champagne! We're celebrating!"
Bartender: "Celebrating? What?"
Blondes: "Well, we just finished a puzzle in record speed!"
Bartender: "Really? How?"
Blondes: "Well, the box said 2-4 years, but we did it in six months!"