You and I know the meaning of amigo,
We're not alike, yet everybody we know
knows we're more than brothers,
we're best of friends.
We may not look, or think like one another,
And there were times, when we have hurt each other,
Still we're more than brothers,
We're best of friends.

It is believed that these lyrics are to the theme from the first season only.

Thanks to Mac P. for help with this show.