I was Science Student of the Month once in high school. I had to dig the certificate out of an old dusty trunk before Keith would believe me. The fact that my bachelor's degree includes the word science amuses him greatly. I'm going to go out on a limb here and tell you why.
It all stems from my casual admittance one day, several years ago that I wasn't totally, completely sure which revolved around which, the earth around the sun or the sun around the earth. I know, I know! Keith gave me a look and said, "Please tell me right now you are joking." In fact, he's a little embarrassed that I'm sharing this with the rest of the world. Sorry, Keith. Same to you, Galileo.
Here's another one that is perhaps a bit more forgivable. I've struggled for years with the proper use of the words it's vs. its. Even after reading Eats, Shoots and Leaves and cowering under Keith's incredulity, I still have this site bookmarked. I tend to add an apostrophe when using its as a possessive pronoun. I have to really stop and think about it. Or pull down my bookmarks. Hey, I didn't claim to be an English major.
If you really want your husband to wonder about your sanity ask him, "What century are we living in again?" I do it. I learned somewhere long ago that if you are talking about say, the seventeenth century you are actually discussing the sixteen hundreds. But I had to call up Keith just now to confirm that. I'm never sure if you are supposed to add or subtract and which is which. Make sense? I know. Scary. Does anyone think that I should home school my kids?
Please tell me someone else uses Wikipedia as much as I do.