Rebellion against an authority

Mostly sailors ( pirates ) against superior officers.

To drink a bottle of Captain Morgan or Admiral Nelson until it is empty.

A group of three or more post-doctoral researchers (postdocs).

A Mutiny is when you allow someone to engage in penetrative sex with yourself during pirate-esque sorts of role play and then have them ambushed by one or more people in which you proceed to 'take over'.

when better, more appropriate titles go AWOL

What happens when you've just placed toothpaste on your toothbrush, you get distracted by something in another room, and it falls off into the sink.

When a group of co-workers decide on a destination for lunch, only to find that a few select members of the group have decided to go elsewhere. These individuals inform the original organizer typically as the excursion begins, i.e. on the way out the door or while in the car.