Ricky cites research that states there are thousands of undiscovered species, which leads Karl to ask if it's even worth finding unknown species. Ricky relates an idea for the "Car of the Future," with an unusual fuel source, and Karl speculates that aliens were involved in the invention of the computer chip. Karl fondly recalls the era of his childhood when everyone was "thumping their monkeys." Ricky invents the world's toughest animal and invites Karl to design his own. A documentary about a pregnant man sparks a discussion about the optimal placement of human anatomy.