I'm a blonde so I have 100% all rights
to post this one!

A College Professor was elaborating on
dynamics in calculations in reformulations
in mathematics, and he noticed one of
his students who appeared not to be
observant and be brooding about. He
summoned him up to the front of the
class and asked him a question:

Define "Eternity"?

The student was extremely quick to
respond with:

Professor, Sir, 4 Blonde women at
a 4-way stop-sign intersection.