This early morning, at around 1AM, I was laying down on the sofa talking with a friend, who was sitting on a small table in front of the sofa.
At some point I felt like an earthquake, and I said that to my friend, who answered me: "we are in London, there cannot be earthquakes, it was just me shaking the table". Then he moved again his body, and I felt another shake.
Well, this morning news were full of reports about an earthquake in London, shouting things like "Biggest earthquake in London in 25 years", it seems of about 5.3 Richter, just before 1AM!!!!
So I felt a real earthquake, not just my friend shaking his bottom side :)