Brick
A brick is a rock that has been taught to stack, and has never forgotten.
Fog
Fog is a cloud that came down to see what everyone was doing, and now can’t see anything.
Ladder
A ladder is a staircase that has decided to stand up straight, and expects you to do the same.
List of things that are wet
A complete list of everything that is wet, compiled by volunteers who are now also on it.
Purple
Purple is made by mixing red and blue, both of whom deny being involved.
Rectangle
A rectangle has two long sides and two short sides, and a committee to decide which is which.
Saturday
Saturday is 24 hours long, officially; the public has measured it at nine hours and forty minutes.
Second
A second is one sixtieth of a minute, and has already ended by the time you finish reading this.
Sock
Socks are sold in pairs and lost in ones, and 9.4 billion have gone missing since 1904.
Yesterday
Yesterday is the day before today, and until midnight was known as today.