According to Stephen Colbert, the GOP's white cells were not strong enough to prevent Arlen Specter from contracting donkey flu.

Donkey flu, swine flu, monkey pox, mad cow, all these animal diseases always bring out the concern and compassion in everyone. But you contract a little bit of opossum syphilis, and all you get are judgmental faces. Open your minds, people.

The Colbert Report airs Monday through Thursday at 11:30pm / 10:30c.