1. pop off （用不必要的评论来）插嘴，打断

To interrupt with an unnecessary remark

e.g. Bob keeps popping off when he should be listening.

2. pop ones cork 突然发疯

To suddenly go crazy

e.g. I was so upset that I nearly popped my cork.

3. pop up 突然出现

To appear suddenly and unexpectedly somewhere

e.g. I never know where Rachel is going to pop up next.

4. pop the question 求婚

To propose marriage

e.g. She waited six years for him to pop the question.

5. pop sb. on sth. 打某人的某个身体部位

To hit sb. on some body part

e.g. I got so mad， I popped Jason on the chin.