我妈来了快放开我手你妈叫我一直牵着你
[wŏ mā lái le kuài fàng kāi wŏ shŏu nĭ mā jiào wŏ yī zhí qiān zhe nĭ]
Literal translation would mean 'My mom came, let go of my hand quickly / your mom said keep holding hands'. This seems to depict an embarrassing yet playful exchange of a private moment between lovers interrupted by the sudden appearance of a parent or a third person’s unexpected suggestion, playing on familial relations mixed up in a moment of young romance.