There’s only one letter difference between them, but perhaps that’s on purpose. At five, best friends can turn into worst enemies and back to bosom buddies again in the space of seconds.

Yet things can be complicated further, for little brothers cause trouble, and L’s best friend has a little brother.

Little brothers get frustrated with big brothers and their friends do things that purposely irritate or exclude them. They are likely to destroy totally big brother’s blanket tent if big brother doesn’t allow him to join in the fun. Little brothers are for teaching patience and sharing.

So get ready, L.