What does 我在包里 mean?
我在包里


is a literal translation of 


  I'm in the bag


which means "I'm drunk" in English. While the Chinese sentence does not have any relationship with 'drunk' at all.

Here are some phrases that mean I'm drunk in chinese:

我喝醉了

我喝多了

我断片了 (I'm so drunk that lost my memory)