Prank calls range from annoying hang-ups to false calls to emergency services or bomb threats. Prank calls that waste the time of emergency services are a criminal offense in most countries, and in the United States of America, the Telecommunications Act makes any prank call a misdemeanor with penalties of up to a year in prison and a fine of $10,000 (depending on severity).
One example of a recent hoax call occurred in Perth Australia on New Years Eve, 2002, when a drunken teenager called the new anti-terrorist hotline to report a bomb threat against the New Years Eve Fireworks celebration. The threat was taken seriously, and the celebrations were about to be canceled, when police discovered that no such threat existed. The teen was arrested for deliberate false reporting.
Some examples of well-known prank calls are: