Mysterious mug....

If the mug could talk, it would said, "hye, I'm here!". Hikhik, that was what I thought when I saw my favorite mug at the pantry one hour ago. The real story is just simple like this:
A few weeks ago, I bought a mug, a simple mug with flowery design on it. Yes, I did used the mug everyday until lats Monday, I realized that someone or somebody has already taken or using my mug. It is because of I've search the mug everywhere in the pantry and couldn't find it. I did asked some of the staff's from the other departments but they totally know nothing about the disappearance of the mysterious mug.
Then, early morning, at about 7.45 when I entered the office pantry's, I found my wonderful mug. Mystery clouded me....
Ps: Maybe someone used it and forgot to put it back in the pantry.....