"Read my lips" literally means 讀我的唇, but actually it means" you listen to me very carefully".
For example:
A: Do you want to hang out with me tonight?
B: Read my lips. NO. (在講這句話的時候可以放慢語速,然后把“NO ”的唇形給展現出來,表達他們不愿意的程度。)