"Breeding roaches" joke
The following is true - the whole story can be found on p. 101 of the July Scientific American:
S.C.Johnson Corporation, maker of Raid, breeds 80,000 roaches a week to test its products on. It maintains a number of different breeds, including some pesticide-resistant ones.
One of the most resistant is called HRDC. These almost unkillable roaches are so named because they were collected from the halls of the House of Representatives in the District of Columbia.
Not enough votes...