Armistício

There's a saying
I don't know if it's English or Portuguese
All I know is the saying goes
One does it, two does it, three does it

You did one, you did two
But three I won't let you do
You did one, you did two
But three I won't let you do

Now you come asking for a deal
Now you come asking for an armistice
I lost trust in you
Because you're like a sheep
That loses its fur but doesn't lose the vice