This phrase is used to indicate that it is not a good time to argue or fight because the situation is already tense. It literally translates to 'the oven is not for buns', but figuratively it means 'this is not a good time for trouble'.
Examples
- Spanish: No le menciones el divorcio a papa hoy, el horno no está para bollos.
- English: Don't mention the divorce to dad today, this is not a good time for trouble.