marble

have all your marbles (informal)

lose your marbles - to start acting in a strange way and forgetting things. He's pretty old but he still has all his marbles, if that's what you mean.

See also: all

lose your marbles (informal)

to start acting in a strange way and forgetting things. I may be old, but I haven't lost my marbles yet.

See also: lose

pick up your marbles (and go home/leave) (American)

to suddenly leave an activity you have been involved in with other people, because you do not like what is happening. If you don't like the way we do things around here, well, you can pick up your marbles and leave.

See also: pick

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lose your marbles

to start forgetting things, behaving strangely, or becoming mentally ill. I haven't lost my marbles yet. She's begun to lose her marbles, and there's nothing we can do.

See also: lose