At the weekend, I was driving along a road that had just become a dual carriageway. It was 50 then it became 70. I sped up to the limit and the person who had been right behind me decided to really go for it and overtook me - only to suddenly slow down as he saw a speed camera van.
I would admit to schadenfreude.
There are some other examples in the news at the moment. I am sure people can imagine what I am talking about.
Apparently it's become a very Googled word over the last few days.