Count me in on the "sex with Tiger" thing as well. Had me going there...
OK, two silly examples for you:
1) When I was an 18-year-old newlywed and very poor, my mom gave me a big box of powdered milk. She said it was very economical because it would last forever. So I took it home and made a pitcher of milk, drank some of it right away, and then three weeks later, I was surprised to find out that it had gone bad! I called my mom and told her that she was wrong and it didn't last forever as she had claimed. I didn't realize that she meant only in its dry state.
2) Hockey used to be one of my special interests, and nature is still one. So when I read about a minor-league team called the Monarchs, I didn't think of kings or crowns right away. I did not find anything out of the ordinary about my mental image of hockey players skating around with big orange-and-black butterflies on their jerseys. Once I saw their actual logo, it dawned on me that not everyone instantly associates "monarch" with "butterfly"!