My mom was great with games at parties.
I was thinking about this game, detective, which I was trying to think how to describe. Then I found this description online:
Choose one person to be the detective. That person has to leave the room (or hide behind a tree, if you're outside). While the detective is gone, choose a leader.
The leader begins doing something, like flapping his arms like a chicken, or doing a dance move, or nodding his head. Everyone else copies the leader. Send one person to retrieve the detective.
When the detective returns, her job is to figure out who the leader is. The leader has to change his movement at least every thirty seconds, and everyone else follows. The trick is for everyone not to stare at the leader and to make sure they change their movements quick enough so the detective can't figure out who is starting the action.
Once the detective figures out the mystery, the old leader becomes the detective and the game starts over.
Some suggestions for movements: Funky chicken Slow motion running Playing airplane Shrugging shoulders Dancing River Dance style Spinning in circles (For kids only. Or very slowly for adults.) Patting your tummy or head Air guitar Break dancing (just kidding)
If you want to use this game as part of a full party, you can play Clue, serve mysterious foods and have everyone wear a name badge with their thumbprint on it. Hand out magnifying glasses for party favors.