~ Benjamin Franklin produced electricity by rubbing cats backwards.

~ The theory of evolution was greatly objected to because it made man think.

~ Three kinds of blood vessels are arteries, vanes and caterpillars.

~ Charles Darwin was a naturalist who wrote the organ of the species.

~ A magnet is something you find crawling all over a dead cat.

~ The Earth makes one resolution every 24 hours.

~ Geometry teaches us to bisex angles.

~ Objects in motion tend to stay in motion, unless they are in the missionary position, in which case the lady just lies there motionless.

~ Artificial insemination is when the farmer does it to the cow instead of the bull.

~ An example of animal breeding is the farmer who mated a bull that gave a great deal of milk with a bull with good meat.

~ English sparrows and starlings eat the farmers grain and soil his corpse.

~ By self-pollination, the farmer may get a flock of long haired sheep.

Sounds just about right