This phrase is used to refer to someone who is extremely punctual. The literal translation is 'more punctual than an ugly bride', based on the stereotype that an 'ugly bride' would never be late for her wedding for fear that the groom might change his mind.
Examples
- Spanish: Siempre llega más puntual que novia fea a todas las reuniones.
- English: He always arrives at all the meetings more punctual than an ugly bride.