Source · the work in full
Rashi on the Former Prophets
Chapter 12
Judges 12
And crossed northward. They crossed the Yardein and travelled north in trans-Yardein to Gilod.
Since the contemptibles of Ephraim had said, "What are you ,Gilod?" The lowliest in Ephraim would mock Gilod, saying, "Of what significance are you, Gilod, among Ephraim and among Menasheh?" This is Targum Yonasan's interpretation.
The Gilodites captured the Yardein crossings. They posted sentries at the crossing areas.
Say Shiboles please. May I cross this river flow?
They were not proficient in proper pronunciation. They were speech deficient.
Ivtzan. Boaz.
You arrive at the cited line; the whole work is yours to read around it. The text is set from the cited public-domain edition.