Sanity.
Bits of rolled-up rubber shed by the tires of race cars that accumulate at the edges of the track, especially at the corners.
Any of several children's games played with small balls (made of marble or more commonly glass).
Sanity.
Humour, especially when clever or quick.
A person who tells funny anecdotes or jokes; someone witty.
The ability to think quickly; mental cleverness, especially under short time constraints.
Intellectual ability; faculty of thinking, reasoning.
Intelligence; common sense.