Sometime in the 1990's, before Cartoon Network got way, way off the track, some of their twisted geniuses decided to redub a scene from Challenge of the Super Friends featuring the Legion of Doom. This was one of the goofy ideas that helped pave the way for [adult swim] to debut in 2001:
All this says to me is that the staff at CN at the time had a really warped sense of humor. Apparently, they thought it would be funny if we thought Brainiac was tired of wearing briefs. Not even Allen Funt was this subtle.