Earthquake!!! Help

Was in the office working late...suddenly I felt my chair was moving. I was thinking I'm not sitting properly that's why. Re-adjusted it and it was still the same. Then someone in my office said "Earthquake!" hahaha...then I realised the whole building was shaking leh! I wanna leave the office immediately but this Indian lady was still remote controlling my PC sia...hahaha...what a day to end.