The poster forgot the bunny quotes ("so-to-say") in «stereotypical "Nigerian scammer"», but added the term 'stereotypical' to lead you there, and the content was clear: certainly the poster did not express or suggest that «scammers are Nigerian». "Scotch tape" is from Minnesota, and the Scots are probably not that disturbed from the underlying idea of "Careful with that glue, Eugene! "Be a Scot", don't waste it". The Nigerian princes happened, terminology spawned, Nigeria has presumably not yet demanded that those scams should be called with Greek letters. Because we are not fools and we know losing one's head is not decapitation, and losing one's mind is not misplacing it on the wrong table. You know what's Eugene even if no-one's called Eugene, and if you don't you can get it's a cultural reference.