/ ˌsɒdəm ən gəˈmɒrə; NAmE ˌsɑːdəm ən gəˈmɑːrə; -mɔːrə/ noun
a place that is full of people behaving in a sexually immoral way :
The village had a reputation as a latter-day Sodom and Gomorrah.
ORIGIN: From the names of two cities in the Bible which were destroyed by God to punish the people for their sexually immoral behaviour.