On Saturday I decided to unpack the speakers for my computer. I found the box they were in, but it was taped up. To open the box I needed a sharp implement. Because I had lost my pocket knife to the TSA, I grabbed the nearest such item in the room: a butter knife.
As I attempted to open the box, the knife just wouldn’t cut the tape.
I thought these things were serrated.
Inspection of the blade revealed that it wasn’t. (Looking in the utensil drawer later, it turns out half of our matching sets of butter knifes are serrated and the other half are not. Weird.)