To help my mother, you understand”,
Line 31: "“And I hope some fellow will lend a hand"
Line 32: "To help my mother, you understand”,"
" And I hope some fellow will lend a hand "
(He hopes another person would help his own mother if she needed it.)
" To help my mother, you understand”, "
(He explains to his friends that he is imagining his own mother in the same situation.)
Overall meaning: The boy hopes someone would help his mother in the same way.