A bottomless pit.
More Traditional Proverbs:
Eat fire and your mouth will burn live on credit and your pride will burn.Traditional
Don't raise your stick and the dog won't bark at you.
Traditional
An endurance test for some people is the pursuit of happiness.
Traditional
Women workers in old watch factories got poisoning by licking brushes used for applying radium compound to watch faces.
Traditional
The reward of a good deed is to have done it.
Traditional
If you're going to live by the river, make friends with the crocodile
Traditional