Beware of a pledge that eats.
More Portuguese Proverbs:
A good thing is soon caught up.Portuguese
He has nothing, for whom nothing is enough.
Portuguese
The savage ox grows tame on strange ground.
Portuguese
If a poor man gives to you, he expects more in return.
Portuguese
Play with an ass, and he will slap your face with his tail.
Portuguese
Will he nill he, the ass must go the fair.
Portuguese