(Photo: Essence of Dilmunia)
This will happen to you if the chuck on your drill isn't tight. Your bit will remain stuck in the material you were trying to bore through.
This photo shows the recently completed United Tower, a 50-storey structure on the coast of Bahrain. It will soon house a 5-star hotel, among other businesses, in a wealthy area of that Gulf state. The external structure rests on an octagonal base and creates the impression that it rotates counterclockwise a full 360º.
-via Amusing Planet