On this episode of Wonder Why, we look at probably the most uniquely titled one hit wonder.  "Mmm mmm mmm mmm" by the Canadian group Crash Test Dummies hit the top ten in 1994.  With the distinct vocals of singer Brad Roberts, the very descriptive song stood out from the rest of the songs on the charts at the time.

Why didn't the follow up songs chart well? Why did future Crash Test Dummies albums fail to make much of a dent in America? @chadsmart and @MikeDeKalb break down the career and try to figure out why the band became a subject for Wonder Why.