Speaking In Tongues in "Mmm Mmm Mmm Mmm"

Each verse of "Mmm Mmm Mmm Mmm" by Crash Test Dummies is about a child seen as peculiar. Lead singer Brad Roberts explains the inspiration for the third one, whose parents "shook and lurched all over the church floor." This is from his Songfacts interview, where he explains the first two verses as well:
https://www.songfacts.com/blog/interviews/brad-roberts-of-crash-test-dummies