Where a girl (or boy) puts their promiscuous behaviour on hold for the month of November.
Girl1: He totally wants you! Are you going home with him?
Girl2: I can't, it's No-hoe-vember.
When a girl (or boy) puts their promiscuous behaviour on hold for the month of October.
Girl1: Did you go home with the lad from last night?
Girl2: No. I'm sticking to Stop-hoe-ber this month.