别摸我头会长不高的
[bié mō wŏ tóu huì zhăng bù gāo de]
With the playful phrase 'Don't touch my head, or I won't grow taller', there's a whimsical rejection of physical closeness. Traditionally, some believe head-touching could affect growth, though medically unsubstantiated; the idiom generally signals discomfort with or avoidance of intimacy.