Jewish weekend
Taking a Friday and Saturday off from work/social organizations instead of having a Saturday and Sunday off (or any one, or combination of day(s) off excluding Friday and Saturday). Refers to the Jewish schools, or "Yeshiva", where the Jewish people take Friday and Saturday from school to attend temple.
Guy: Hey, boss. May I have take a Jewish weekend? May I take off on Friday and come in to work on Sunday? I have to attend a wedding.
Boss: Sure.
Guy: Thanks!
Boss: Sure.
Guy: Thanks!