她满口脏话却是我一世依靠她肩膀瘦弱却是我一世依靠
[tā măn kŏu zàng huà què shì wŏ yī shì yī kào tā jiān băng shòu ruò què shì wŏ yī shì yī kào]
The nickname describes a very unique and important figure for the author: the 'her' can speak profanely but provides lifelong reliability and support with her weak-appearing shoulders. The contrasting elements reveal an image of someone whose tough exterior belies an inner strength providing unconditional support and reliance.