This test screwed me up in first grade. I thought it was some kind of grammar test so I kept asking if it was a verb, a noun, or an adverb. The test giver was some researcher and was convinced I wasn't taking the test seriously because I wouldn't say wugs. He got kind of angry and I found the whole thing to be kind of distressing. I asked to stop and he just got even angrier and said something like, "No one has ever had trouble with the wug test before". I was convinced I was bad at grammar for years after that. Anyway, wugs! =)