How’s your English grammar? Mine is rather good if this test (via The Loop) is anything to go by, 25 out of 25 was my score.

Congratulations, you are a grammar master! You have a superb understanding of even the trickiest grammar rules. Not only do you know the difference between affect and effect, but you also never confuse your tenses. You must be an English scholar because only 4% of Americans can get a perfect score on this test.

Right. How did you do?