drink up

“By no means,” replied the Fox; “pray do not molest them.” “How is this?” said the Hedgehog; “do you not want to be rid of them?” “No,” returned the Fox, “for these flies which you see are full of blood, and sting me but little, and if you rid me of these which are already satiated, others more hungry will come in their place, and will drink up all the blood I have left.”

Not being able to reach them, they agreed to drink up the river, but it happened that they burst themselves with drinking long before they reached the hides.