A drunk's ass has no master.
More Portuguese Proverbs:
If you have a friend who is a physician, send him to your enemy's house.
A loss not missed by your neighbor is not a real loss.
Not everything that shines is gold.
Hell is full of good intentions.
Chairs sink and stools rise.
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When I have money in my purse, I have food in my mouth.
Who lends his lips to nought but blame, has in his heart no love of fame.
A fool laughs at himself.