pronounced (Hellz Teef)
n. Expression of utter surprise. An exclamation
Angela : "Atheism, Its basically a non-prophet organisation"
Thomas : "Hells Teeth Angela!... Must you blaspheme!"
Hells Teeth is a Geordie phrase of exclamation, it means the same as "for gods sake" or any other phrase that you can think of that is spontaneously said when one is surprised or shocked.
Hells teeth! Look at that!