I guess I should tell this story... I was teaching a smart high school class college psych, and there kept one day being construction noises next door, like drills and such. I finally asked what was going on, and imitated the noise... and the kids laughed so hard one actually fell over, turned purple and couldn't breathe (I am laughing again as I type even though it was also horribly embarrassing)...

It wasn't construction. It was the speech pathology class trying to produce English.