Orgies

[Becky]

A sacrifice accompanied by certain ceremonies in honor
of some pagan deity; especially, the ceremonies observed by the Greeks
and Romans in the worship of Dionysus, or Bacchus, which were
characterized by wild and dissolute revelry.

[Couch Potatoe]

an occasion when a group of people behave in a wild uncontrolled way, especially involving sex, alcohol, or illegal drugs: