Phrase(s): I can’t get over something!
Fig. I am just so amazed! (The something can be a fact or a pronoun, such as that or it. Also with just, as in the examples.) • "I just can’t get over the way everybody pitched in and helped," said Alice. • Bob: The very idea, Sue and Tom doing something like that! Bill: I can’t get over it!
McGrawhill's American Idioms And Phrasal Verbs