软心软骨帅小伙铁骨铮铮女汉子
[ruăn xīn ruăn gú shuài xiăo huŏ tiĕ gú zhēng zhēng nǚ hàn zi]
This nickname plays on contrasting stereotypes. 'Soft-hearted, soft-boned handsome boy' suggests a tender and gentle male persona. 'Iron-willed, tough woman' contrasts by implying a strong-willed, independent female persona. Together it means the user could be tough or gentle depending on the context.