These presentators could simply walk into a catholic Glaswegian pub wearing an emblem of protestantism to achieve the same result.
Actually that wouldn't be funny. Death or serious injury would be nearly inevitable.

No one would be that mad. Not that you have to go as far as Glasgow. I remember walking down the Kings road (in Chelsea) behind a beefy skinhead in a West Ham top, with a pit bull on a lead. He was merrily shouting out "Chelsea are ****. Chelsea are ****." (Shakespeare lives!)

Now, at the top of the Kings Road you are about as likely to meet a Chelsea headhunter as you are to meet a Wildebeest. In fact you have to get a long way down before that is much of a risk, (the mad fans, not the wildebeest) but before that bit, only a part of the way down the road, there is a pub, the Trafalgar, which is as close to rough as it gets around there. (Ie what anyone else would call "normal".)

Aha, I said to my wife, lets see what he does when he gets near the Trafalgar.

Wisely, matey shut up, and crossed the road to boot. Otherwise he would have got a beating.

So there you go Don, you could get you head kicked in on the Kings road if you annoyed people enough.