This shows the midwife's surprise to seeing the second baby come out first. Alternate translation: "So this is how you break your way out first!" or "You have burst out first!" (See: [[rc://en/ta/man/translate/figs-explicit]])
This is the name of a boy. Translators may add a footnote that says: "The name Perez means 'breaking out.'" (See: [[rc://en/ta/man/translate/translate-names]])