Internet humor/Two Cows Talk

I'm fairly sure this one predates the wide availability of the internet. I saw a version in the early 80's from my mother, who was working in a primary school at the time.

So did I, around 1987. It was actually a poster, with cartoon illustrations, and was "localised" to the UK, e.g. it had the Tory party, Labour party etc. as sections. -- DrBob