There were two blondes as roommates and they both bought mice. When
they got home the first blonde said, "How are we going to tell them
apart?"
The second blonde said, "Why don't we take one and chop off one of its
legs?"
But during the night the mouse with four legs said to the mouse with
three legs, ''That's not fair -- I want three legs too.'' So the mouse
with three legs told him to eat one of his legs. And so he did.
The next morning the blondes were upset about this so they did the
same thing as the day before. But again the mouse with three legs ate
one of his legs. This went on until both mice had no tails and legs.
Then one of the blondes shouted, ''All right, that's it! You take the
black one and I'll take the white one!''