小しょう雨う決けっ行こう

expression, noun

held unless heavy rain; canceled only in case of heavy rain

A set phrase used in event announcements to mean the event will proceed as scheduled unless there is heavy rain. Often seen on posters, tickets, or websites for outdoor events.

• 明日あしたの運うん動どう会かいは小しょう雨う決けっ行こうです。