Gad zukes
When someone you thought was a loser drops a bomb on you, and you go from being annoyed to being impressed in one go.
'Gad zukes!' I said when my classmate just figured out the secret to passing the test.
'Gad zukes!' I said when my friend told me he had a crush on the principal.
'Gad zukes!' I said when my cousin told me she had a million dollars in her backpack.