"You shall not eat over the blood"—Leviticus 19:26.
A youth is forbidden to eat and drink in a gluttonous fashion, according to the specific [extreme] conditions that define a "rebellious son." (A rebellious son is put to death. As such, the Sages interpret the afore-cited verse to mean: "Do not eat [in such a manner that will cause] blood [i.e., death].")
