In this capacity, he has test-fired a potato cannon, driven the world's fastest lawnmower, barfed in an F-16 fighter jet, played the part of a corpse in an opera, picked his son up at junior high school in the Oscar Mayer Wienermobile, and used a sparking Barbie doll to set fire to a pair of underpants on national television. But he also has a frivolous side. Praise for Dave Barry's Complete Guide to Guys…