An ounce of brains
A lawyer finds out he has an inoperable brain tumor.

It's so large, they have to do a brain transplant.

His doctor gives him a choice of available brains.

There's a jar of rocket scientist brains for $10 an ounce.

A jar of regular scientist brains for $15 an ounce.

And a jar of lawyer brains for the sum of $800 an ounce.

The outraged lawyer says, "This is a rip off! How come the lawyer brains are so damned expensive?"

The doctor replies, "Do you know how many lawyers it takes to get an ounce of brains?"

An Unusual Vet
There was once an aspiring veterinarian who put himself through veterinary school working nights as a taxidermist.
Upon graduation, he decided he could combine his two vocations to better serve the needs of his patients and their owners, while doubling his practice and, therefore, his income.

He opened his own offices with a shingle on the door saying, "Dr. Jones, Veterinary Medicine and Taxidermy -- Either way, you get your dog back!"