One day, two blondes each bought a pig. Their problem was telling the two pigs apart.
The first blonde had an idea: "I'll cut my pig's tail off. Then we'll know the difference." So she did.
That night, the pigs fought, and one bit the other's tail off. The next morning, the blonde proposed another solution: "I'll cut my pig's right hind leg off." So she did.
That night, the same thing happened; one pig bit off the other's right hind leg. The next morning, upset, they decided to cut off the left hind leg of one pig. So they did.
Again, that night, a fight led to the loss of that leg. Desperate, one blonde declared, "I'll cut my pig's right front leg off. Then we can tell them apart." So she did.
Predictably, that leg was also bitten off in another fight. The blondes, now very upset, decided the only logical step was to cut off the remaining leg from one pig. So they did.
That night, the pigs fought once more, and the one-legged pig lost its last limb. The next morning, the blondes were devastated.
Finally, the other blonde spoke up: "How about you take the white one, and I'll take the black one?"