Season 17, Episode 23 - "Comfortably Dumb"
Bulldog takes Stuart and his friends out for pizza, and when he is unable to work out the tip in his head, he worries that his son views him as an idiot. After numerous attempts to prove he is smart, Bulldog ends up falling in with a secret society, the “dumb-and-proud” sect. When the leader unexpectedly resigns, Bulldog inadvertently volunteers to run for president and sets out to change their reclusive ways. His first order of business is to arrange a company outing, to Café Nervosa. Bulldog is sure that this act is his ticket to presidency, but fears he has exposed the group for the worse after several of its members become embarrassed by his specially-made dunce hats. Meanwhile, Roz, Gil and Denise all take IQ tests, with Kenny tabulating the results. When Denise turns out to be smarter than Roz, Roz is convinced that the results were fixed and demands numerous recounts.
