What does it mean to have two Best-Friends?

What does it mean to have two best friends??
It means double the laughter
Double the tears
Double the gossip
and Double the Fears

Twice of everything
The good and the bad
Twice the fun

It means 3 way calling
Having more to talk about
and Always having someone there

Some say your lucky if you have only one
I guess your twice as lucky if you have two
Maybe you have three or four

The more best-friends you have
The better
It multiplies the fun

I guess I'm lucky
Because I don't have one best-friend
I have two