Should a logo be self-explanatory? It is only by association with a product, a service, a business, or a corporation that a logo takes on any real meaning. It derives its meaning and usefulness from the quality of that which it symbolizes. If a company is second rate, the logo will eventually be perceived as second rate. It is foolhardy to believe that a logo will do its job immediately, before an audience has been properly conditioned.
The visual message which professes to be profound or elegant often boomerangs as mere pretension; and the frame of mind that looks at humor as trivial and flighty mistakes the shadow for the substance. In short, the notion that the humorous approach to visual communication is undignified or belittling is sheer nonsense.