Лёгкая еврейская загадка

Соседского мальчика зовут Йешурун. Я слышал, как папа другого соседского ребёнка выговаривает своему сыну:
"Если ты будешь называть Йешуруна ТАК, ой-ой-ой что тебе будет!"
Как именно называл своего друга этот ребёнок?

Об этроге (напомнить)

ETROG (Heb. אתְרֹוג )ֶ, citrus fruit among the Four Species
used on Sukkot.( Read more... )

The
word etrog, the name by which this fruit is known in talmudic
literature, derives, according to one view, from the Persian
torong, according to another, from the Sanskrit suranga,
meaning “beautifully colored.”( Read more... )

. Others contend that “the fruit of a goodly tree” is
to be identified with the Pinus or Cedrus, called dar in Sanskrit;
others say that what is meant is simply any beautiful (hadur) fruit.( Read more... )

The etrog was formerly unique among the fruit trees
of Ereẓ Israel in requiring constant irrigation for its growth,
whereas the others were only occasionally irrigated, and then
only to increase their yield of fruit. This fact is adduced among
the various proofs that “the fruit of a goodly tree” (peri eẓ
hadar) is to be identified with the etrog, eẓ hadar being interpreted
as eẓ hiddur -hydor, that is, the tree which requires water.
[Jehuda Feliks]
ENCYCLOPAEDIA JUDAICA, Second Edition, Volume 6, p. 540