I had one every school lunch from K-7th grade. I stopped for a bit and ate one the other day, it was vile.
Yes, I have heard of cosmic brownies. No, I do not think we mean the same thing when we say "cosmic brownies."
Never heard of them, so I googled it: they look yum. I found a recipe, which tells me they're about 50% sugar, which is absolutely insane.