so much free fruit lying around tempted newcomers to sneak out at night with sacks and pillowcases which they hurriedly stuffed with the awful oranges , never realizing that no one would object if they came in daylight and took every sour oranges in the entire city , only a fool would bother defending them ; at their next breakfast the thieves would discover ( to their considerable horror ) that the oranges yielded a pale juice which bit into your mouth like lemon juice .