Stern, with his on-air partner Robin Quivers (a black lady) and others, did prank phone calls, song parodies and celebrity interviews.
All of these often included sexual, racist or discriminatory content, which caused Stern and his radio station to receive warnings and fines from the FCC, the US government office responsible for regulating Radio and TV programs.
With the popularity of Howard Stern, other shock jocks began to have popular radio shows of their own.
The disc jockeys often used stage names or changed their real names in some way to sound cool or crazy.
Some notable jocks included "Mancow", Don Imus, "Opie and Anthony", Liz Wilde, and many others.
The shock jocks are very competitive with each other, and often try to "top" the other jocks in degree of outrageousness.
Some (including Stern) have been fired by one radio station for their behavior, only to be quckly hired by another competing station.
The shock jock phenomenon is not only in the USA, but in the UK, Australia, and other countries as well... (G.K)
prank phone call いたずら電話
discriminatory content 差別的な内容
FCC 連邦通信委員会（Federal Communications Commision）
in degree of outrageousness 突飛さの程度
only to be quickly hired 結果すぐに採用された