The time in which people gather in a localized area to play some form of Super Smash. This can be shortened to Smash. It is always Smash O'Clock.

That time at a party when the straight girls get drunk enough to start kissing each other.

another name for noon.12:00

Another way of saying "time for a drink"
Can be used at finishing time of work, at the end of a sporting event or any time that "time for a drink" would be mist appropriate

The magical hour between 3 and 4am when it is acceptable to drop your pants within a group of people (usually theatre people) after working many long and strenuous hours most often drafting, model-building, loading-in or striking sets or lights onstage. It has its origins when a group of grad students spent most of week trapped inside a room drafting their final project for drafting class and just wanted to be comfortable so they dropped trow and pantsless o'clock was born

An unreasonably early hour.

The prime-time television watching hours when so much local bandwidth is consumed by your neighbors streaming Netflix content that the internet slows to a crawl. Roughly 8PM to 11PM.