Nothing too bad, but the Plant Boss at the end of Stage 2 of Joe and Mac (SNES) sounds like it's saying "DAMN!" every time you hit it.

Also, the Village Elder at the end of each level of Prehistorik Man, if you don't bring enough food says "That's not good enough, Sam! Damned pathetic, really! You must do better, we need that food!"

I think the GBA version is changed to Darned, but I can't remember, and have yet to see what is says on the DSiWare version.