This phrase is colloquial and can be used humorously or teasingly. 'Gordito rompe calzones' can be translated as 'little fat guy who tears underwear'. It's often used to describe a chubby guy who is surprisingly strong or unexpectedly successful, especially with the ladies.
Examples
- Spanish: A pesar de su tamaño, Juan es un verdadero gordito rompe calzones, siempre tiene una nueva novia.
- English: Despite his size, Juan is a real 'gordito rompe calzones', he always has a new girlfriend.